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A modified multi-objective particle swarm optimization approach and its application to the design of a deepwater composite riser 被引量:1
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作者 y.zheng J.Chen 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2018年第2期275-284,共10页
A modified multi-objective particle swarm optimization method is proposed for obtaining Pareto-optimal solutions effectively. Different from traditional multiobjective particle swarm optimization methods, Kriging meta... A modified multi-objective particle swarm optimization method is proposed for obtaining Pareto-optimal solutions effectively. Different from traditional multiobjective particle swarm optimization methods, Kriging meta-models and the trapezoid index are introduced and integrated with the traditional one. Kriging meta-models are built to match expensive or black-box functions. By applying Kriging meta-models, function evaluation numbers are decreased and the boundary Pareto-optimal solutions are identified rapidly. For bi-objective optimization problems, the trapezoid index is calculated as the sum of the trapezoid’s area formed by the Pareto-optimal solutions and one objective axis. It can serve as a measure whether the Pareto-optimal solutions converge to the Pareto front. Illustrative examples indicate that to obtain Paretooptimal solutions, the method proposed needs fewer function evaluations than the traditional multi-objective particle swarm optimization method and the non-dominated sorting genetic algorithm II method, and both the accuracy and the computational efficiency are improved. The proposed method is also applied to the design of a deepwater composite riser example in which the structural performances are calculated by numerical analysis. The design aim was to enhance the tension strength and minimize the cost. Under the buckling constraint, the optimal trade-off of tensile strength and material volume is obtained. The results demonstrated that the proposed method can effec tively deal with multi-objective optimizations with black-box functions. 展开更多
关键词 Multi-objective particle swarm optimization Kriging meta-model Trapezoid index Deepwater composite riser
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Laboratory results of foam application testing for longwall shield dust control in a simulated environment
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作者 W.R.Reed M.R.Shahan +1 位作者 y.zheng A.Mazzella 《International Journal of Coal Science & Technology》 EI CAS CSCD 2021年第2期217-227,共11页
There were 37 longwall faces operating in mines in the United States in 2019.The average panel width for these longwalls was approximately 368.5 m(1209 ft).This translates to a range of approximately 170-240 shields p... There were 37 longwall faces operating in mines in the United States in 2019.The average panel width for these longwalls was approximately 368.5 m(1209 ft).This translates to a range of approximately 170-240 shields per longwall,depending upon the width of shield.The movement of longwall shields is a significant contributor to respirable dust overexposures to longwall operators.Foam is expected to have the potential to reduce this shield dust generation.The foam is applied to the area on the roof between the coal face and the shield tip after the shearer passes.In this study,the longwall shield dust simulator was used to test three foam agents for their ability to control dust from longwall shield movements.Results showed that at low-velocity ventilation(≈3.0 m/s(600 fpm))all foam agents were able to produce dust reduction levels of at least 45%.At high-velocity ventilation(≈5.1 m/s(1000 fpm)),the reductions were lower and more variable,ranging from being undeterminable for one foam agent to having 46%-63%reductions for the other two foam agents,with one instance of an increase in dust concentration.Overall,the use of foam agents can provide longwall shield dust control.Important factors are roof coverage and the ability of foam to remain on the roof for extended time periods. 展开更多
关键词 LONGWALL SHIELDS Foam Respirable Dust Silica Dust
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EIS ANALYSIS ON THE ANODIC PROCESS OF ZINC IN AN ALKALINE SOLUTION
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作者 y.zheng J.M.Wang +2 位作者 H.Chen J.Q.Zhang C.N.Cao 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2004年第6期912-922,共11页
yThe EIS on theanodic process of pure Zn in an alkaline solution wereperformed and fitted using the expression of Faradic admittance,based on which the mechanism of the process was propose... yThe EIS on theanodic process of pure Zn in an alkaline solution wereperformed and fitted using the expression of Faradic admittance,based on which the mechanism of the process was proposed.The results showed that besides electrode potential E the electrochemical reaction rate was affected by the adsorption of Zn(OH)ads on the electrode surface and the diffusion of in the electrolyte in active region,and only by the covering of passivation layer on the electrode surface in both transitive and passivation regions.The equivalent circuit sapplied in these various circumstances were proposed and the variation of some parameters and state variables was also discussed. 展开更多
关键词 ZN alkalinesolution anodicprocess EIS
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Further investigation on the fusion of ^(6)Li with ^(209)Bi target at near-barrier energies
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作者 张高龙 焦振威 +36 位作者 张广鑫 M.R.Cortes 胡世鹏 钱建强 D.Mengoni 屈卫卫 李聪博 郑云 张焕乔 孙慧斌 王楠 张春雷 J.J.Valiente-Dobón D.Testov M.Mazzocco A.Gozzelino C.Parascandolo D.Pierroutsakou M.La Commara A.Goasduff D.Bazzacco D.R.Napoli F.Galtarossa F.Recchia A.Illana S.Bakes I.Zanon S.Aydin G.de Angelis M.Siciliano R.Menegazzo S.M.Lenzi J.L.Ferreira J.Rangel Serkan Akkoyun L.F.Canto J.Lubian 《Chinese Physics C》 SCIE CAS CSCD 2024年第7期106-117,共12页
The complete and incomplete fusion cross sections for ^(6)Li+^(209)Bi were measured using the in-beamγ-ray method around the Coulomb barrier.The cross sections of(deuteron captured)incomplete fusion(ICF)products were... The complete and incomplete fusion cross sections for ^(6)Li+^(209)Bi were measured using the in-beamγ-ray method around the Coulomb barrier.The cross sections of(deuteron captured)incomplete fusion(ICF)products were re-quantified experimentally for this reaction system.The results reveal that the ICF cross section is equivalent to that of complete fusion(CF)above the Coulomb barrier and dominant near or below the Coulomb barrier.A theoretical calculation based on the continuum discretized coupled channel(CDCC)method was performed for the aforementioned CF and ICF cross sections;the result is consistent with the experiments.The universal fusion function(UFF)was also compared with the measured CF cross section for different barrier parameters,demonstrating that the CF suppression factor is significantly influenced by the choice of potential,which can reflect both dynamic and static effects of breakup on the fusion process. 展开更多
关键词 cross section incomplete fusion suppression factor weakly bound nuclei
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Flux variations of cosmic ray air showers detected by LHAASO-KM2A during a thunderstorm on June 10,2021
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作者 F.Aharonian 安琪 +270 位作者 阿西克古 白立新 白云翔 包逸炜 D.Bastieri 毕效军 毕玉江 蔡金庭 曹喆 曹臻 常进 常劲帆 陈恩生 陈良 陈亮 陈龙 陈明君 陈玛丽 陈素弘 陈松战 陈天禄 陈学健 陈阳 程皓麟 程宁 程耀东 崔树旺 崔晓红 崔昱东 戴本忠 代洪亮 戴子高 单增罗布 D.della Volpe 段凯凯 樊军辉 范一中 范志香 方军 方堃 冯存峰 封莉 冯少辉 丰晓婷 冯有亮 高博 高川东 高林青 高启 高卫 高伟康 葛茂茂 耿利斯 龚光华 苟全补 顾旻皓 郭福来 郭俊广 郭晓磊 郭义庆 郭莹莹 韩毅昂 何会海 贺昊宁 何思乐 何新波 何钰 M.Heller 贺远强 侯超 侯贤 胡红波 胡铨 胡森 胡世聪 呼晓军 黄代绘 黄文昊 黄性涛 黄晓渊 黄勇 黄志成 季筱璐 贾焕玉 贾康 江琨 姜泽军 金敏 康明铭 柯通 D.Kuleshov 李兵兵 李澄 李骢 李飞 李海波 李会财 李华阳 李军 李剑 李捷 李凯 李文龙 李秀荣 李昕 李新 李一卓 李哲 黎卓 梁恩维 梁云峰 林苏杰 刘冰 刘成 刘栋 刘虎 刘海东 刘佳 刘江来 刘佳松 刘金艳 刘茂元 柳若愚 刘四明 刘伟 刘怡 刘以农 龙文杰 鲁睿 罗晴 吕洪魁 马伯强 马玲玲 马欣华 毛基荣 A.Masood 闵振 W.Mitthumsiri 南云程 区子维 庞彬宇 P.Pattarakijwanich 裴致远 齐孟尧 祁业情 乔冰强 秦家军 D.Ruffolo A.Sáiz 邵澄宇 邵琅 O.Shchegolev 盛祥东 石京燕 宋慧超 Yu.V.Stenkin V.Stepanov 苏扬 孙秦宁 孙晓娜 孙志斌 谭柏轩 唐泽波 田文武 王博东 王超 王辉 王洪光 王建成 王界双 王利苹 王玲玉 王冉 王润娜 王为 王祥高 王祥玉 王阳 王玉东 王岩谨 王亚平 王忠海 王仲翔 王振 王铮 韦大明 魏俊杰 魏永健 文韬 吴超勇 吴含荣 武莎 吴雪峰 吴雨生 席邵强 夏捷 夏君集 项光漫 肖迪泫 肖刚 辛广广 辛玉良 邢祎 熊峥 徐东莲 徐仁新 薛良 闫大海 颜景志 杨朝文 杨冯帆 杨何文 杨佳盈 杨莉莉 杨明洁 杨睿智 杨深邦 姚玉华 姚志国 叶一锰 尹丽巧 尹娜 游晓浩 游智勇 于艳红 袁强 岳华 曾厚敦 曾婷轩 曾玮 曾宗康 查敏 翟徐徐 张彬彬 张丰 张海明 张恒英 张建立 张丽霞 张力 张路 张鹏飞 张佩佩 张瑞 张少博 张少如 张寿山 张潇 张笑鹏 张云峰 张月雷 张毅 张勇 赵兵 赵静 赵雷 赵立志 赵世平 郑福 郑应 周斌 周浩 周佳能 周平 周荣 周勋秀 祝成光 祝凤荣 朱辉 朱科军 左雄 《Chinese Physics C》 SCIE CAS CSCD 2023年第1期193-203,共11页
The Large High Altitude Air Shower Observatory(LHAASO)has three sub-arrays,KM2A,WCDA,and WFCTA.The flux variations of cosmic ray air showers were studied by analyzing the KM2A data during a thunderstorm on June 10,202... The Large High Altitude Air Shower Observatory(LHAASO)has three sub-arrays,KM2A,WCDA,and WFCTA.The flux variations of cosmic ray air showers were studied by analyzing the KM2A data during a thunderstorm on June 10,2021.The number of shower events that meet the trigger conditions increases significantly in atmospheric electric fields,with a maximum fractional increase of 20%.The variations in trigger rates(increases or decreases)were found to be strongly dependent on the primary zenith angle.The flux of secondary particles increased significantly,following a trend similar to that of shower events.To better understand the observed behavior,Monte Carlo simulations were performed with CORSIKA and G4KM2A(a code based on GEANT4).We found that the experimental data(in saturated negative fields)were in good agreement with the simulations,assuming the presence of a uniform electric field of-700 V/cm with a thickness of 1500 m in the atmosphere above the observation level.Due to the acceleration/deceleration by the atmospheric electric field,the number of secondary particles with energy above the detector threshold was modified,resulting in the changes in shower detection rate. 展开更多
关键词 THUNDERSTORM cosmic rays extensive air showers LHAASO-KM2A
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Search for the doubly heavy baryon Ξ_(bc)^(+)→ decaying to J/ψΞ_(c)^(+)
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作者 R.Aaij A.S.W.Abdelmotteleb +1013 位作者 C.Abellan Beteta F.Abudinén T.Ackernley B.Adeva M.Adinolfi H.Afsharnia C.Agapopoulou C.A.Aidala S.Aiola Z.Ajaltouni S.Akar K.Akiba J.Albrecht F.Alessio M.Alexander A.Alfonso Albero Z.Aliouche P.Alvarez Cartelle S.Amato J.L.Amey Y.Amhis L.An L.Anderlini M.Andersson A.Andreianov M.Andreotti D.Andreou D.Ao F.Archilli A.Artamonov M.Artuso E.Aslanides M.Atzeni B.Audurier S.Bachmann M.Bachmayer J.J.Back A.Bailly-reyre P.Baladron Rodriguez V.Balagura W.Baldini J.Baptista de Souza Leite M.Barbetti R.J.Barlow S.Barsuk W.Barter M.Bartolini F.Baryshnikov J.M.Basels G.Bassi B.Batsukh A.Battig A.Bay A.Beck M.Becker F.Bedeschi I.B.Bediaga A.Beiter V.Belavin S.Belin V.Bellee K.Belous I.Belov I.Belyaev G.Bencivenni E.Ben-Haim A.Berezhnoy R.Bernet D.Berninghoff H.C.Bernstein C.Bertella A.Bertolin C.Betancourt F.Betti Ia.Bezshyiko S.Bhasin J.Bhom L.Bian M.S.Bieker N.V.Biesuz S.Bifani P.Billoir A.Biolchini M.Birch F.C.R.Bishop A.Bitadze A.Bizzeti M.P.Blago T.Blake F.Blanc S.Blusk D.Bobulska J.A.Boelhauve O.Boente Garcia T.Boettcher A.Boldyrev N.Bondar S.Borghi M.Borsato J.T.Borsuk S.A.Bouchiba T.J.V.Bowcock A.Boyer C.Bozzi M.J.Bradley S.Braun A.Brea Rodriguez J.Brodzicka A.Brossa Gonzalo D.Brundu A.Buonaura L.Buonincontri A.T.Burke C.Burr A.Bursche A.Butkevich J.S.Butter J.Buytaert W.Byczynski S.Cadeddu H.Cai R.Calabrese L.Calefice S.Cali R.Calladine M.Calvi M.Calvo Gomez P.Camargo Magalhaes P.Campana D.H.Campora Perez A.F.Campoverde Quezada S.Capelli L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini I.Carli P.Carniti L.Carus A.Casais Vidal R.Caspary G.Casse M.Cattaneo G.Cavallero V.Cavallini S.Celani J.Cerasoli D.Cervenkov A.J.Chadwick M.G.Chapman M.Charles Ph.Charpentier C.A.Chavez Barajas M.Chefdeville C.Chen S.Chen A.Chernov S.Chernyshenko V.Chobanova S.Cholak M.Chrzaszcz A.Chubykin V.Chulikov P.Ciambrone M.F.Cicala X.Cid Vidal G.Ciezarek G.Ciullo P.E.L.Clarke M.Clemencic H.V.Cliff J.Closier J.L.Cobbledick V.Coco J.A.B.Coelho J.Cogan E.Cogneras L.Cojocariu P.Collins T.Colombo L.Congedo A.Contu N.Cooke G.Coombs I.Corredoira G.Corti B.Couturier D.C.Craik J.Crkovská M.Cruz Torres R.Currie C.L.Da Silva S.Dadabaev L.Dai E.Dall'Occo J.Dalseno C.D'Ambrosio A.Danilina P.d'Argent J.E.Davies A.Davis O.De Aguiar Francisco J.de Boer K.De Bruyn S.De Capua M.De Cian U.De Freitas Carneiro Da Graca E.De Lucia J.M.De Miranda L.De Paula M.De Serio D.De Simone P.De Simone F.De Vellis J.A.de Vries C.T.Dean F.Debernardis D.Decamp V.Dedu L.Del Buono B.Delaney H.-P.Dembinski V.Denysenko O.Deschamps F.Dettori B.Dey A.Di Cicco P.Di Nezza S.Didenko L.Dieste Maronas S.Ding V.Dobishuk A.Dolmatov C.Dong A.M.Donohoe F.Dordei A.C.dos Reis L.Douglas A.G.Downes M.W.Dudek L.Dufour V.Duk P.Durante J.M.Durham D.Dutta A.Dziurda A.Dzyuba S.Easo U.Egede V.Egorychev S.Eidelman S.Eisenhardt S.Ek-In L.Eklund S.Ely A.Ene E.Epple S.Escher J.Eschle S.Esen T.Evans L.N.Falcao Y.Fan B.Fang S.Farry D.Fazzini M.Feo A.D.Fernez F.Ferrari L.Ferreira Lopes F.Ferreira Rodrigues S.Ferreres Sole M.Ferrillo M.Ferro-Luzzi S.Filippov R.A.Fini M.Fiorini M.Firlej K.M.Fischer D.S.Fitzgerald C.Fitzpatrick T.Fiutowski F.Fleuret M.Fontana F.Fontanelli R.Forty D.Foulds-Holt V.Franco Lima M.Franco Sevilla M.Frank E.Franzoso G.Frau C.Frei D.A.Friday J.Fu Q.Fuehring E.Gabriel G.Galati A.Gallas Torreira D.Galli S.Gambetta Y.Gan M.Gandelman P.Gandini Y.Gao M.Garau L.M.Garcia Martin P.Garcia Moreno J.García Pardiäas B.Garcia Plana F.A.Garcia Rosales L.Garrido C.Gaspar R.E.Geertsema D.Gerick L.L.Gerken E.Gersabeck M.Gersabeck T.Gershon L.Giambastiani V.Gibson H.K.Giemza A.L.Gilman M.Giovannetti A.Gioventù P.Gironella Gironell C.Giugliano M.A.Giza K.Gizdov E.L.Gkougkousis V.V.Gligorov C.Gäbel E.Golobardes D.Golubkov A.Golutvin A.Gomes S.Gomez Fernandez F.Goncalves Abrantes M.Goncerz G.Gong I.V.Gorelov C.Gotti J.P.Grabowski T.Grammatico L.A.Granado Cardoso E.Graugés E.Graverini G.Graziani A.T.Grecu L.M.Greeven N.A.Grieser L.Grillo S.Gromov B.R.Gruberg Cazon C.Gu M.Guarise M.Guittiere P.A.Günther E.Gushchin A.Guth Y.Guz T.Gys T.Hadavizadeh G.Haefeli C.Haen J.Haimberger S.C.Haines T.Halewood-leagas M.M.Halvorsen P.M.Hamilton J.Hammerich Q.Han X.Han E.B.Hansen S.Hansmann-Menzemer L.Hao N.Harnew T.Harrison C.Hasse M.Hatch J.He K.Heijhoff K.Heinicke R.D.L.Henderson A.M.Hennequin K.Hennessy L.Henry J.Heuel A.Hicheur D.Hill M.Hilton S.E.Hollitt R.Hou Y.Hou J.Hu J.Hu W.Hu X.Hu W.Huang X.Huang W.Hulsbergen R.J.Hunter M.Hushchyn D.Hutchcroft P.Ibis M.Idzik D.Ilin P.Ilten A.Inglessi A.Iniukhin A.Ishteev K.Ivshin R.Jacobsson H.Jage S.J.Jaimes Elles S.Jakobsen E.Jans B.K.Jashal A.Jawahery V.Jevtic X.Jiang M.John D.Johnson C.R.Jones T.P.Jones B.Jost N.Jurik S.Kandybei Y.Kang M.Karacson D.Karpenkov M.Karpov J.W.Kautz F.Keizer D.M.Keller M.Kenzie T.Ketel B.Khanji A.Kharisova S.Kholodenko T.Kirn V.S.Kirsebom O.Kitouni S.Klaver N.Kleijne K.Klimaszewski M.R.Kmiec S.Koliiev A.Kondybayeva A.Konoplyannikov P.Kopciewicz R.Kopecna P.Koppenburg M.Korolev I.Kostiuk O.Kot S.Kotriakhova A.Kozachuk P.Kravchenko L.Kravchuk R.D.Krawczyk M.Kreps S.Kretzschmar P.Krokovny W.Krupa W.Krzemien J.Kubat W.Kucewicz M.Kucharczyk V.Kudryavtsev G.J.Kunde D.Lacarrere G.Lafferty A.Lai A.Lampis D.Lancierini J.J.Lane R.Lane G.Lanfranchi C.Langenbruch J.Langer O.Lantwin T.Latham F.Lazzari M.Lazzaroni R.Le Gac S.H.Lee R.Lefèvre A.Leflat S.Legotin P.Lenisa O.Leroy T.Lesiak B.Leverington H.Li K.Li P.Li S.Li Y.Li Z.Li X.Liang C.Lin T.Lin R.Lindner V.Lisovskyi R.Litvinov G.Liu H.Liu Q.Liu S.Liu A.Lobo Salvia A.Loi R.Lollini J.Lomba Castro I.Longstaff J.H.Lopes S.López Soliäo G.H.Lovell Y.Lu C.Lucarelli D.Lucchesi S.Luchuk M.Lucio Martinez V.Lukashenko Y.Luo A.Lupato E.Luppi A.Lusiani K.Lynch X.-R.Lyu L.Ma R.Ma S.Maccolini F.Machefert F.Maciuc V.Macko P.Mackowiak S.Maddrell-Mander L.R.Madhan Mohan A.Maevskiy D.Maisuzenko M.W.Majewski J.J.Malczewski S.Malde B.Malecki A.Malinin T.Maltsev H.Malygina G.Manca G.Mancinelli D.Manuzzi C.A.Manzari D.Marangotto J.F.Marchand U.Marconi S.Mariani C.Marin Benito M.Marinangeli J.Marks A.M.Marshall P.J.Marshall G.Martelli G.Martellotti L.Martinazzoli M.Martinelli D.Martinez Santos F.Martinez Vidal A.Massafferri M.Materok R.Matev A.Mathad V.Matiunin C.Matteuzzi K.R.Mattioli A.Mauri E.Maurice J.Mauricio M.Mazurek M.McCann L.Mcconnell T.H.McGrath N.T.McHugh A.McNab R.McNulty J.V.Mead B.Meadows G.Meier D.Melnychuk S.Meloni M.Merk A.Merli L.Meyer Garcia M.Mikhasenko D.A.Milanes E.Millard M.Milovanovic M.-N.Minard A.Minotti S.E.Mitchell B.Mitreska D.S.Mitzel A.Mädden R.A.Mohammed R.D.Moise S.Mokhnenko T.Mombächer I.A.Monroy S.Monteil M.Morandin G.Morello M.J.Morello J.Moron A.B.Morris A.G.Morris R.Mountain H.Mu F.Muheim M.Mulder K.Müller C.H.Murphy D.Murray R.Murta P.Muzzetto P.Naik T.Nakada R.Nandakumar T.Nanut I.Nasteva M.Needham N.Neri S.Neubert N.Neufeld P.Neustroev R.Newcombe E.M.Niel S.Nieswand N.Nikitin N.S.Nolte C.Normand C.Nunez A.Oblakowska-Mucha V.Obraztsov T.Oeser D.P.O'Hanlon S.Okamura R.Oldeman F.Oliva M.E.Olivares C.J.G.Onderwater R.H.O'Neil J.M.Otalora Goicochea T.Ovsiannikova P.Owen A.Oyanguren O.Ozcelik K.O.Padeken B.Pagare P.R.Pais T.Pajero A.Palano M.Palutan Y.Pan G.Panshin A.Papanestis M.Pappagallo L.L.Pappalardo C.Pappenheimer W.Parker C.Parkes B.Passalacqua G.Passaleva A.Pastore M.Patel C.Patrignani C.J.Pawley A.Pearce A.Pellegrino M.Pepe Altarelli S.Perazzini D.Pereima A.Pereiro Castro P.Perret M.Petric K.Petridis A.Petrolini A.Petrov S.Petrucci M.Petruzzo H.Pham A.Philippov R.Piandani L.Pica M.Piccini B.Pietrzyk G.Pietrzyk M.Pili D.Pinci F.Pisani M.Pizzichemi V.Placinta J.Plews M.Plo Casasus F.Polci M.Poli Lener M.Poliakova A.Poluektov N.Polukhina I.Polyakov E.Polycarpo S.Ponce D.Popov S.Popov S.Poslavskii K.Prasanth L.Promberger C.Prouve V.Pugatch V.Puill G.Punzi H.R.Qi W.Qian N.Qin S.Qu R.Quagliani N.V.Raab R.I.Rabadan Trejo B.Rachwal J.H.Rademacker R.Rajagopalan M.Rama M.Ramos Pernas M.S.Rangel F.Ratnikov G.Raven M.Rebollo De Miguel F.Redi F.Reiss C.Remon Alepuz Z.Ren 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M.Vesterinen D.Vieira M.Vieites Diaz X.Vilasis-Cardona E.Vilella Figueras A.Villa P.Vincent F.C.Volle D.vom Bruch A.Vorobyev V.Vorobyev N.Voropaev K.Vos R.Waldi J.Walsh C.Wang J.Wang J.Wang J.Wang J.Wang M.Wang R.Wang Y.Wang Z.Wang Z.Wang Z.Wang J.A.Ward N.K.Watson D.Websdale C.Weisser B.D.C.Westhenry D.J.White M.Whitehead A.R.Wiederhold D.Wiedner G.Wilkinson M.K.Wilkinson I.Williams M.Williams M.R.J.Williams R.Williams F.F.Wilson W.Wislicki M.Witek L.Witola C.P.Wong G.Wormser S.A.Wotton H.Wu K.Wyllie Z.Xiang D.Xiao Y.Xie A.Xu J.Xu L.Xu M.Xu Q.Xu Z.Xu Z.Xu D.Yang S.Yang Y.Yang Z.Yang Z.Yang L.E.Yeomans H.Yin J.Yu X.Yuan E.Zaffaroni M.Zavertyaev M.Zdybal O.Zenaiev M.Zeng D.Zhang L.Zhang S.Zhang S.Zhang Y.Zhang Y.Zhang A.Zharkova A.Zhelezov y.zheng T.Zhou X.Zhou Y.Zhou V.Zhovkovska X.Zhu X.Zhu Z.Zhu V.Zhukov Q.Zou S.Zucchelli D.Zuliani G.Zunica LHCb Collaboration 《Chinese Physics C》 SCIE CAS CSCD 2023年第9期1-13,共13页
A first search for the Ξ_(bc)^(+)J/ψΞ_(c)^(+) decay is performed by the LHCb experiment with a data sample of proton-proton collisions, corresponding to an integrated luminosity of 9 fb−1 recorded at centre-of-mass... A first search for the Ξ_(bc)^(+)J/ψΞ_(c)^(+) decay is performed by the LHCb experiment with a data sample of proton-proton collisions, corresponding to an integrated luminosity of 9 fb−1 recorded at centre-of-mass energies of 7, 8, and 13 TeV. Two peaking structures are seen with a local (global) significance of 4.3(2.8) and 4.1(2.4) standard deviations at masses of 6571 and 6694 MeV/c2, respectively. Upper limits are set on the Ξ+bc baryon production cross-section times the branching fraction relative to that of the B+c→J/ψD+s decay at centre-of-mass energies of 8 and 13 TeV, in the Ξ+bc and in the B+c rapidity and transverse-momentum ranges from 2.0 to 4.5 and 0 to 20GeV/c, respectively. Upper limits are presented as a function of the Ξ+bc mass and lifetime. 展开更多
关键词 QCD B physics charm physics spectroscopy
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Search for the rare decays W^(+)→D_(s)^(+)γ and Z→D^(0)γ at LHCb
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作者 R.Aaij A.S.W.Abdelmotteleb +1069 位作者 C.Abellan Beteta F.Abudinén T.Ackernley B.Adeva M.Adinolfi P.Adlarson H.Afsharnia C.Agapopoulou C.A.Aidala Z.Ajaltouni S.Akar K.Akiba J.Albrecht F.Alessio M.Alexander A.Alfonso Albero Z.Aliouche P.Alvarez Cartelle R.Amalric S.Amato J.L.Amey Y.Amhis L.An L.Anderlini M.Andersson A.Andreianov M.Andreotti D.Andreou D.Ao F.Archilli A.Artamonov M.Artuso E.Aslanides M.Atzeni B.Audurier S.Bachmann M.Bachmayer J.J.Back A.Bailly-reyre P.Baladron Rodriguez V.Balagura W.Baldini J.Baptista de Souza Leite M.Barbetti R.J.Barlow S.Barsuk W.Barter M.Bartolini F.Baryshnikov J.M.Basels G.Bassi B.Batsukh A.Battig A.Bay A.Beck M.Becker F.Bedeschi I.B.Bediaga A.Beiter V.Belavin S.Belin V.Bellee K.Belous I.Belov I.Belyaev G.Benane G.Bencivenni E.Ben-Haim A.Berezhnoy R.Bernet S.Bernet Andres D.Berninghoff H.C.Bernstein C.Bertella A.Bertolin C.Betancourt F.Betti Ia.Bezshyiko S.Bhasin J.Bhom L.Bian M.S.Bieker N.V.Biesuz S.Bifani P.Billoir A.Biolchini M.Birch F.C.R.Bishop 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M.Schiller H.Schindler M.Schmelling B.Schmidt S.Schmitt O.Schneider A.Schopper M.Schubiger S.Schulte M.H.Schune R.Schwemmer B.Sciascia A.Sciuccati S.Sellam A.Semennikov M.Senghi Soares A.Sergi N.Serra L.Sestini A.Seuthe Y.Shang D.M.Shangase M.Shapkin I.Shchemerov L.Shchutska T.Shears L.Shekhtman Z.Shen S.Sheng V.Shevchenko B.Shi E.B.Shields Y.Shimizu E.Shmanin R.Shorkin J.D.Shupperd B.G.Siddi R.Silva Coutinho G.Simi S.Simone M.Singla N.Skidmore R.Skuza T.Skwarnicki M.W.Slater J.C.Smallwood J.G.Smeaton E.Smith K.Smith M.Smith A.Snoch L.Soares Lavra M.D.Sokoloff F.J.P.Soler A.Solomin A.Solovev I.Solovyev R.Song F.L.Souza De Almeida B.Souza De Paula B.Spaan E.Spadaro Norella E.Spedicato E.Spiridenkov P.Spradlin V.Sriskaran F.Stagni M.Stahl S.Stahl S.Stanislaus E.N.Stein O.Steinkamp O.Stenyakin H.Stevens S.Stone D.Strekalina Y.S Su F.Suljik J.Sun L.Sun Y.Sun P.Svihra P.N.Swallow K.Swientek A.Szabelski T.Szumlak M.Szymanski Y.Tan S.Taneja M.D.Tat A.Terentev F.Teubert E.Thomas D.J.D.Thompson K.A.Thomson H.Tilquin V.Tisserand S.T'Jampens M.Tobin L.Tomassetti G.Tonani X.Tong D.Torres Machado D.Y.Tou S.M.Trilov C.Trippl G.Tuci A.Tully N.Tuning A.Ukleja D.J.Unverzagt A.Usachov A.Ustyuzhanin U.Uwer A.Vagner V.Vagnoni A.Valassi G.Valenti N.Valls Canudas M.van Beuzekom M.Van Dijk H.Van Hecke E.van Herwijnen C.B.Van Hulse M.van Veghel R.Vazquez Gomez P.Vazquez Regueiro C.Vázquez Sierra S.Vecchi J.J.Velthuis M.Veltri A.Venkateswaran M.Veronesi M.Vesterinen D.Vieira M.Vieites Diaz X.Vilasis-Cardona E.Vilella Figueras A.Villa P.Vincent F.C.Volle D.vom Bruch A.Vorobyev V.Vorobyev N.Voropaev K.Vos C.Vrahas R.Waldi J.Walsh G.Wan C.Wang G.Wang J.Wang J.Wang J.Wang J.Wang M.Wang R.Wang X.Wang Y.Wang Z.Wang Z.Wang Z.Wang J.A.Ward N.K.Watson D.Websdale Y.Wei C.Weisser B.D.C.Westhenry D.J.White M.Whitehead A.R.Wiederhold D.Wiedner G.Wilkinson M.K.Wilkinson I.Williams M.Williams M.R.J.Williams R.Williams F.F.Wilson W.Wislicki M.Witek L.Witola C.P.Wong G.Wormser S.A.Wotton H.Wu J.Wu K.Wyllie Z.Xiang D.Xiao Y.Xie A.Xu J.Xu L.Xu L.Xu M.Xu Q.Xu Z.Xu Z.Xu D.Yang S.Yang X.Yang Y.Yang Z.Yang Z.Yang L.E.Yeomans V.Yeroshenko H.Yeung H.Yin J.Yu X.Yuan E.Zaffaroni M.Zavertyaev M.Zdybal O.Zenaiev M.Zeng C.Zhang D.Zhang L.Zhang S.Zhang S.Zhang Y.Zhang Y.Zhang A.Zharkova A.Zhelezov y.zheng T.Zhou X.Zhou Y.Zhou V.Zhovkovska X.Zhu X.Zhu Z.Zhu V.Zhukov Q.Zou S.Zucchelli D.Zuliani G.Zunica LHCb Collaboration 《Chinese Physics C》 SCIE CAS CSCD 2023年第9期14-26,共13页
A search for the rare decays W^(+)→D_(s)^(+)γ and Z→D0γis performed using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of 13TeV,corresponding to an integrated luminosity... A search for the rare decays W^(+)→D_(s)^(+)γ and Z→D0γis performed using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of 13TeV,corresponding to an integrated luminosity of 2.0fb−1.No significant signal is observed for either decay mode and upper limits on their branching fractions are set using W^(+)→D_(s)^(+)γ and Z→μ+μ−decays as normalization channels.The upper limits are 6.5×10^(−4) and 2.1×10^(−3) at 95% confidence level for the W^(+)→D_(s)^(+)γ and Z→D^(0)γ decay modes,respectively.This is the first reported search for the Z→D^(0)γ decay,while the upper limit on the W+→D+sγbranching fraction improves upon the previous best limit. 展开更多
关键词 W/Z boson rare decay upper limit of branching fraction
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Future Physics Programme of BESⅢ 被引量:540
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作者 M.Ablikim M.N.Achasov +486 位作者 P.Adlarson S.Ahmed M.Albrecht M.Alekseev A.Amoroso F.F.An Q.An Y.Bai O.Bakina R.Baldini Ferroli Y.Ban K.Begzsuren J.V.Bennett N.Berger M.Bertani D.Bettoni F.Bianchi J Biernat J.Bloms I.Boyko R.A.Briere L.Calibbi H.Cai X.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin J.Chai J.F.Chang W.L.Chang J.Charles G.Chelkov Chen G.Chen H.S.Chen J.C.Chen M.L.Chen S.J.Chen Y.B.Chen H.Y.Cheng W.Cheng G.Cibinetto F.Cossio X.F.Cui H.L.Dai J.P.Dai X.C.Dai A.Dbeyssi D.Dedovich Z.Y.Deng A.Denig Denysenko M.Destefanis S.Descotes-Genon F.De Mori Y.Ding C.Dong J.Dong L.Y.Dong M.Y.Dong Z.L.Dou S.X.Du S.I.Eidelman J.Z.Fan J.Fang S.S.Fang Y.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng M.Fritsch C.D.Fu Y.Fu Q.Gao X.L.Gao Y.Gao Y.Gao Y.G.Gao Z.Gao B.Garillon I.Garzia E.M.Gersabeck A.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl M.Greco L.M.Gu M.H.Gu Y.T.Gu A.Q.Guo F.K.Guo L.B.Guo R.P.Guo Y.P.Guo A.Guskov S.Han X.Q.Hao F.A.Harris K.L.He F.H.Heinsius T.Held Y.K.Heng Y.R.Hou Z.L.Hou H.M.Hu J.F.Hu T.Hu Y.Hu G.S.Huang J.S.Huang X.T.Huang X.Z.Huang Z.L.Huang N.Huesken T.Hussain W.Ikegami Andersson W.Imoehl M.Irshad Q.Ji Q.P.Ji X.B.Ji X.L.Ji H.L.Jiang X.S.Jiang X.Y.Jiang J.B.Jiao Z.Jiao D.P.Jin S.Jin Y.Jin T.Johansson N.Kalantar-Nayestanaki X.S.Kang R.Kappert M.Kavatsyuk B.C.Ke I.K.Keshk T.Khan A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc M.Kurth M.G.Kurth W.Kuhn J.S.Lange P.Larin L.Lavezzi H.Leithoff T.Lenz C.Li Cheng Li D.M.Li F.Li F.Y.Li G.Li H.B.Li H.J.Li J.C.Li J.W.Li Ke Li L.K.Li Lei Li P.L.Li P.R.Li Q.Y.Li W.D.Li W.G.Li X.H.Li X.L.Li X.N.Li X.Q.Li Z.B.Li H.Liang H.Liang Y.F.Liang Y.T.Liang G.R.Liao L.Z.Liao J.Libby C.X.Lin D.X.Lin Y.J.Lin B.Liu B.J.Liu C.X.Liu D.Liu D.Y.Liu F.H.Liu Fang Liu Feng Liu H.B.Liu H.M.Liu Huanhuan Liu Huihui Liu J.B.Liu J.Y.Liu K.Y.Liu Ke Liu Q.Liu S.B.Liu T.Liu X.Liu X.Y.Liu Y.B.Liu Z.A.Liu Zhiqing Liu Y.F.Long X.C.Lou H.J.Lu J.D.Lu J.G.Lu Y.Lu Y.P.Lu C.L.Luo M.X.Luo P.W.Luo T.Luo X.L.Luo S.Lusso X.R.Lyu F.C.Ma H.L.Ma L.L.Ma M.M.Ma Q.M.Ma X.N.Ma X.X.Ma X.Y.Ma Y.M.Ma F.E.Maas M.Maggiora S.Maldaner S.Malde Q.A.Malik A.Mangoni Y.J.Mao Z.P.Mao S.Marcello Z.X.Meng J.G.Messchendorp G.Mezzadri J.Min T.J.Min R.E.Mitchell X.H.Mo Y.J.Mo C.Morales Morales N.Yu.Muchnoi H.Muramatsu A.Mustafa S.Nakhoul Y.Nefedov F.Nerling I.B.Nikolaev Z.Ning S.Nisar S.L.Niu S.L.Olsen Q.Ouyang S.Pacetti Y.Pan M.Papenbrock P.Patteri M.Pelizaeus H.P.Peng K.Peters A.A.Petrov J.Pettersson J.L.Ping R.G.Ping A.Pitka R.Poling V.Prasad M.Qi T.Y.Qi S.Qian C.F.Qiao N.Qin X.P.Qin X.S.Qin Z.H.Qin J.F.Qiu S.Q.Qu K.H.Rashid C.F.Redmer M.Richter M.Ripka A.Rivetti V.Rodin M.Rolo G.Rong J.L.Rosner Ch.Rosner M.Rump A.Sarantsev M.Savrie K.Schoenning W.Shan X.Y.Shan M.Shao C.P.Shen P.X.Shen X.Y.Shen H.Y.Sheng X.Shi X.D Shi J.J.Song Q.Q.Song X.Y.Song S.Sosio C.Sowa S.Spataro F.F.Sui G.X.Sun J.F.Sun L.Sun S.S.Sun X.H.Sun Y.J.Sun Y.K Sun Y.Z.Sun Z.J.Sun Z.T.Sun Y.T Tan C.J.Tang G.Y.Tang X.Tang V.Thoren B.Tsednee I.Uman B.Wang B.L.Wang C.W.Wang D.Y.Wang H.H.Wang K.Wang L.L.Wang L.S.Wang M.Wang M.Z.Wang Wang Meng P.L.Wang R.M.Wang W.P.Wang X.Wang X.F.Wang X.L.Wang Y.Wang Y.F.Wang Z.Wang Z.G.Wang Z.Y.Wang Zongyuan Wang T.Weber D.H.Wei P.Weidenkaff H.W.Wen S.P.Wen U.Wiedner G.Wilkinson M.Wolke L.H.Wu L.J.Wu Z.Wu L.Xia Y.Xia S.Y.Xiao Y.J.Xiao Z.J.Xiao Y.G.Xie Y.H.Xie T.Y.Xing X.A.Xiong Q.L.Xiu G.F.Xu L.Xu Q.J.Xu W.Xu X.P.Xu F.Yan L.Yan W.B.Yan W.C.Yan Y.H.Yan H.J.Yang H.X.Yang L.Yang R.X.Yang S.L.Yang Y.H.Yang Y.X.Yang Yifan Yang Z.Q.Yang M.Ye M.H.Ye J.H.Yin Z.Y.You B.X.Yu C.X.Yu J.S.Yu C.Z.Yuan X.Q.Yuan Y.Yuan A.Yuncu A.A.Zafar Y.Zeng B.X.Zhang B.Y.Zhang C.C.Zhang D.H.Zhang H.H.Zhang H.Y.Zhang J.Zhang J.L.Zhang J.Q.Zhang J.W.Zhang J.Y.Zhang J.Z.Zhang K.Zhang L.Zhang S.F.Zhang T.J.Zhang X.Y.Zhang Y.Zhang Y.H.Zhang Y.T.Zhang Yang Zhang Yao Zhang Yi Zhang Yu Zhang Z.H.Zhang Z.P.Zhang Z.Q.Zhang Z.Y.Zhang G.Zhao J.W.Zhao J.Y.Zhao J.Z.Zhao Lei Zhao Ling Zhao M.G.Zhao Q.Zhao S.J.Zhao T.C.Zhao Y.B.Zhao Z.G.Zhao A.Zhemchugov B.Zheng J.P.Zheng y.zheng Y.H.Zheng B.Zhong L.Zhou L.P.Zhou Q.Zhou X.Zhou X.K.Zhou Xingyu Zhou Xiaoyu Zhou Xu Zhou A.N.Zhu J.Zhu J.Zhu K.Zhu K.J.Zhu S.H.Zhu W.J.Zhu X.L.Zhu Y.C.Zhu Y.S.Zhu Z.A.Zhu J.Zhuang B.S.Zou J.H.Zou 《Chinese Physics C》 SCIE CAS CSCD 2020年第4期I0001-I0004,1-102,共106页
There has recently been a dramatic renewal of interest in hadron spectroscopy and charm physics. This renaissance has been driven in part by the discovery of a plethora of charmonium-like XYZ states at BESⅢ and B fac... There has recently been a dramatic renewal of interest in hadron spectroscopy and charm physics. This renaissance has been driven in part by the discovery of a plethora of charmonium-like XYZ states at BESⅢ and B factories, and the observation of an intriguing proton-antiproton threshold enhancement and the possibly related X(1835) meson state at BESⅢ, as well as the threshold measurements of charm mesons and charm baryons. We present a detailed survey of the important topics in tau-charm physics and hadron physics that can be further explored at BESⅢ during the remaining operation period of BEPCⅡ. This survey will help in the optimization of the data-taking plan over the coming years, and provides physics motivation for the possible upgrade of BEPCⅡ to higher luminosity. 展开更多
关键词 MESON HADRON optimization
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Study of BESIII trigger efficiencies with the 2018 J/ψ data 被引量:36
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作者 M.Ablikim M.N.Achasov +501 位作者 P.Adlarson S.Ahmed M.Albrecht R.Aliberti A.Amoroso M.R.An Q.An X.H.Bai Y.Bai O.Bakina R.Baldini Ferroli I.Balossino Y.Ban K.Begzsuren N.Berger M.Bertani D.Bettoni F.Bianchi J.Bloms A.Bortone I.Boyko R.A.Briere H.Cai X.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin J.F.Chang W.L.Chang G.Chelkov D.Y.Chen G.Chen H.S.Chen M.L.Chen S.J.Chen X.R.Chen Y.B.Chen Z.J Chen W.S.Cheng G.Cibinetto F.Cossio X.F.Cui H.L.Dai X.C.Dai A.Dbeyssi R.E.de Boer D.Dedovich Z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori Y.Ding C.Dong J.Dong L.Y.Dong M.Y.Dong X.Dong S.X.Du Y.L.Fan J.Fang S.S.Fang Y.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng J.H.Feng M.Fritsch C.D.Fu Y.Gao Y.Gao Y.Gao Y.G.Gao I.Garzia P.T.Ge C.Geng E.M.Gersabeck A Gilman K.Goetzen L.Gong W.X.Gong W.Gradl M.Greco L.M.Gu M.H.Gu S.Gu Y.T.Gu C.Y Guan A.Q.Guo L.B.Guo R.P.Guo Y.P.Guo A.Guskov T.T.Han W.Y.Han X.Q.Hao F.A.Harris H Hüsken K.L.He F.H.Heinsius C.H.Heinz T.Held Y.K.Heng C.Herold M.Himmelreich T.Holtmann Y.R.Hou Z.L.Hou H.M.Hu J.F.Hu T.Hu Y.Hu G.S.Huang L.Q.Huang X.T.Huang Y.P.Huang Z.Huang T.Hussain W.Ikegami Andersson W.Imoehl M.Irshad S.Jaeger S.Janchiv Q.Ji Q.P.Ji X.B.Ji X.L.Ji H.B.Jiang X.S.Jiang J.B.Jiao Z.Jiao S.Jin Y.Jin T.Johansson N.Kalantar-Nayestanaki X.S.Kang R.Kappert M.Kavatsyuk B.C.Ke I.K.Keshk A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc M.G.Kurth W.Kühn J.J.Lane J.S.Lange P.Larin A.Lavania L.Lavezzi Z.H.Lei H.Leithoff M.Lellmann T.Lenz C.Li C.H.Li Cheng Li D.M.Li F.Li G.Li H.Li H.Li H.B.Li H.J.Li J.L.Li J.Q.Li J.S.Li Ke Li L.K.Li Lei Li P.R.Li S.Y.Li W.D.Li W.G.Li X.H.Li X.L.Li Z.Y.Li H.Liang H.Liang H.Liang Y.F.Liang Y.T.Liang L.Z.Liao J.Libby C.X.Lin B.J.Liu C.X.Liu D.Liu F.H.Liu Fang Liu Feng Liu H.B.Liu H.M.Liu Huanhuan Liu Huihui Liu J.B.Liu J.L.Liu J.Y.Liu K.Liu K.Y.Liu Ke Liu L.Liu M.H.Liu P.L.Liu Q.Liu Q.Liu S.B.Liu Shuai Liu T.Liu W.M.Liu X.Liu Y.Liu Y.B.Liu Z.A.Liu Z.Q.Liu X.C.Lou F.X.Lu H.J.Lu J.D.Lu J.G.Lu X.L.Lu Y.Lu Y.P.Lu C.L.Luo M.X.Luo b P.W.Luo T.Luo X.L.Luo S.Lusso X.R.Lyu F.C.Ma H.L.Ma L.L.Ma M.M.Ma Q.M.Ma R.Q.Ma R.T.Ma X.X.Ma X.Y.Ma F.E.Maas M.Maggiora S.Maldaner S.Malde Q.A.Malik A.Mangoni Y.J.Mao Z.P.Mao S.Marcello Z.X.Meng J.G.Messchendorp G.Mezzadri T.J.Min R.E.Mitchell X.H.Mo Y.J.Mo N.Yu.Muchnoi H.Muramatsu S.Nakhoul Y.Nefedov F.Nerling I.B.Nikolaev Z.Ning S.Nisar S.L.Olsen Q.Ouyang S.Pacetti X.Pan Y.Pan A.Pathak P.Patteri M.Pelizaeus H.P.Peng K.Peters J.Pettersson J.L.Ping R.G.Ping R.Poling V.Prasad H.Qi H.R.Qi K.H.Qi M.Qi T.Y.Qi T.Y.Qi S.Qian W.-B.Qian Z.Qian C.F.Qiao L.Q.Qin X.S.Qin Z.H.Qin J.F.Qiu S.Q.Qu K.H.Rashid K.Ravindran C.F.Redmer A.Rivetti V.Rodin M.Rolo G.Rong Ch.Rosner M.Rump H.S.Sang A.Sarantsev Y.Schelhaas C.Schnier K.Schoenning M.Scodeggio D.C.Shan W.Shan X.Y.Shan J.F.Shangguan M.Shao C.P.Shen P.X.Shen X.Y.Shen H.C.Shi R.S.Shi X.Shi X.D Shi W.M.Song Y.X.Song S.Sosio S.Spataro K.X.Su P.P.Su F.F.Sui G.X.Sun H.K.Sun J.F.Sun L.Sun S.S.Sun T.Sun W.Y.Sun X Sun Y.J.Sun Y.K.Sun Y.Z.Sun Z.T.Sun Y.H.Tan Y.X.Tan C.J.Tang G.Y.Tang J.Tang J.X.Teng V.Thoren I.Uman B.Wang C.W.Wang D.Y.Wang H.J.Wang H.P.Wang K.Wang L.L.Wang M.Wang M.Z.Wang Meng Wang W.Wang W.H.Wang W.P.Wang X.Wang X.F.Wang X.L.Wang Y.Wang Y.D.Wang Y.F.Wang Y.Q.Wang Y.Y.Wang Z.Wang Z.Y.Wang Ziyi Wang Zongyuan Wang D.H.Wei P.Weidenkaff F.Weidner S.P.Wen D.J.White U.Wiedner G.Wilkinson M.Wolke L.Wollenberg J.F.Wu L.H.Wu L.J.Wu X.Wu Z.Wu L.Xia H.Xiao S.Y.Xiao Z.J.Xiao X.H.Xie Y.G.Xie Y.H.Xie T.Y.Xing G.F.Xu Q.J.Xu W.Xu X.P.Xu F.Yan L.Yan W.B.Yan W.C.Yan Xu Yan H.J.Yang H.X.Yang L.Yang S.L.Yang Y.X.Yang Yifan Yang Zhi Yang M.Ye M.H.Ye J.H.Yin Z.Y.You B.X.Yu C.X.Yu G.Yu J.S.Yu T.Yu C.Z.Yuan L.Yuan X.Q.Yuan Y.Yuan Z.Y.Yuan C.X.Yue A.Yuncu A.A.Zafar Y.Zeng B.X.Zhang Guangyi Zhang H.Zhang H.H.Zhang H.Y.Zhang J.J.Zhang J.L.Zhang J.Q.Zhang J.W.Zhang J.Y.Zhang J.Z.Zhang Jianyu Zhang Jiawei Zhang L.Q.Zhang Lei Zhang S.Zhang S.F.Zhang Shulei Zhang X.D.Zhang X.Y.Zhang Y.Zhang Y.H.Zhang Y.T.Zhang Yan Zhang Yao Zhang Yi Zhang Z.H.Zhang Z.Y.Zhang G.Zhao J.Zhao J.Y.Zhao J.Z.Zhao Lei Zhao Ling Zhao M.G.Zhao Q.Zhao S.J.Zhao Y.B.Zhao Y.X.Zhao Z.G.Zhao A.Zhemchugov B.Zheng J.P.Zheng y.zheng Y.H.Zheng B.Zhong C.Zhong L.P.Zhou Q.Zhou X.Zhou X.K.Zhou X.R.Zhou A.N.Zhu J.Zhu K.Zhu K.J.Zhu S.H.Zhu T.J.Zhu W.J.Zhu W.J.Zhu Y.C.Zhu Z.A.Zhu B.S.Zou J.H.Zou 《Chinese Physics C》 SCIE CAS CSCD 2021年第2期48-55,共8页
Using a dedicated data sample taken in 2018 on the J/ψpeak,we perform a detailed study of the trigger efficiencies of the BESIII detector.The efficiencies are determined from three representative physics processes,na... Using a dedicated data sample taken in 2018 on the J/ψpeak,we perform a detailed study of the trigger efficiencies of the BESIII detector.The efficiencies are determined from three representative physics processes,namely Bhabha scattering,dimuon production and generic hadronic events with charged particles.The combined efficiency of all active triggers approaches 100%in most cases,with uncertainties small enough not to affect most physics analyses. 展开更多
关键词 BESIII trigger efficiency Bhabha dimuon hadronic events
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Observation of the Crab Nebula with LHAASO-KM2A−a performance study 被引量:10
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作者 F.Aharonian Q.An +245 位作者 Axikegu L.X.Bai Y.X.Bai Y.W.Bao D.Bastieri X.J.Bi Y.J.Bi H.Cai J.T.Cai Z.Cao J.Chang J.F.Chang X.C.Chang B.M.Chen J.Chen L.Chen M.J.Chen M.L.Chen Q.H.Chen S.H.Chen S.Z.Chen T.L.Chen X.L.Chen Y.Chen N.Cheng Y.D.Cheng S.W.Cui X.H.Cui Y.D.Cui B.Z.Dai H.L.Dai Z.G.Dai D.della Volpe B.D'Ettorre Piazzoli X.J.Dong J.H.Fan Y.Z.Fan Z.X.Fan J.Fang K.Fang C.F.Feng L.Feng S.H.Feng Y.L.Feng B.Gao C.D.Gao Q.Gao W.Gao M.M.Ge L.S.Geng G.H.Gong Q.B.Gou M.H.Gu J.G.Guo X.L.Guo Y.Q.Guo Y.Y.Guo Y.A.Han H.H.He H.N.He J.C.He S.L.He X.B.He Y.He M.Heller Y.K.Hor C.Hou X.Hou H.B.Hu S.Hu S.C.Hu X.J.Hu D.H.Huang Q.L.Huang W.H.Huang X.T.Huang Z.C.Huang F.Ji X.L.Ji H.Y.Jia K.Jiang Z.J.Jiang C.Jin D.Kuleshov K.Levochkin B.B.Li C.Li F.Li H.B.Li H.C.Li H.Y.Li J.Li K.Li W.L.Li X.Li X.R.Li Y.Li Y.Z.Li Z.Li E.W.Liang Y.F.Liang S.J.Lin B.Liu C.Liu D.Liu H.Liu H.D.Liu J.Liu J.L.Liu J.S.Liu J.Y.Liu M.Y.Liu R.Y.Liu S.M.Liu W.Liu Y.N.Liu Z.X.Liu W.J.Long R.Lu H.K.Lv B.Q.Ma L.L.Ma X.H.Ma J.R.Mao A.Masood W.Mitthumsiri T.Montaruli Y.C.Nan B.Y.Pang P.Pattarakijwanich Z.Y.Pei M.Y.Qi D.Ruffolo V.Rulev A.Sáiz L.Shao O.Shchegolev X.D.Sheng J.R.Shi H.C.Song Yu.V.Stenkin V.Stepanov Q.N.Sun X.N.Sun Z.B.Sun P.H.T.Tam Z.B.Tang W.W.Tian B.D.Wang C.Wang H.Wang H.G.Wang J.C.Wang J.S.Wang L.P.Wang L.Y.Wang R.N.Wang W.Wang X.G.Wang X.J.Wang X.Y.Wang Y.D.Wang Y.J.Wang Y.P.Wang Z.Wang Z.H.Wang Z.X.Wang D.M.Wei J.J.Wei Y.J.Wei T.Wen C.Y.Wu H.R.Wu S.Wu W.X.Wu X.F.Wu S.Q.Xi J.Xia J.J.Xia G.M.Xiang G.Xiao H.B.Xiao G.G.Xin Y.L.Xin Y.Xing D.L.Xu R.X.Xu L.Xue D.H.Yan C.W.Yang F.F.Yang J.Y.Yang L.L.Yang M.J.Yang R.Z.Yang S.B.Yang Y.H.Yao Z.G.Yao Y.M.Ye L.Q.Yin N.Yin X.H.You Z.Y.You Y.H.Yu Q.Yuan H.D.Zeng T.X.Zeng W.Zeng Z.K.Zeng M.Zha X.X.Zhai B.B.Zhang H.M.Zhang H.Y.Zhang J.L.Zhang J.W.Zhang L.Zhang L.X.Zhang P.F.Zhang P.P.Zhang R.Zhang S.R.Zhang S.S.Zhang X.Zhang X.P.Zhang Y.Zhang Y.F.Zhang Y.L.Zhang B.Zhao J.Zhao L.Zhao L.Z.Zhao S.P.Zhao F.Zheng y.zheng B.Zhou H.Zhou J.N.Zhou P.Zhou R.Zhou X.X.Zhou C.G.Zhu F.R.Zhu H.Zhu K.J.Zhu X.Zuo 《Chinese Physics C》 SCIE CAS CSCD 2021年第2期518-530,共13页
A sub-array of the Large High Altitude Air Shower Observatory(LHAASO),KM2A is mainly designed to observe a large fraction of the northern sky to hunt for γ-ray sources at energies above 10 TeV.Even though the detecto... A sub-array of the Large High Altitude Air Shower Observatory(LHAASO),KM2A is mainly designed to observe a large fraction of the northern sky to hunt for γ-ray sources at energies above 10 TeV.Even though the detector construction is still underway,half of the KM2A array has been operating stably since the end of 2019.In this paper,we present the KM2A data analysis pipeline and the first observation of the Crab Nebula,a standard candle in very high energy γ-ray astronomy.We detect γ-ray signals from the Crab Nebula in both energy ranges of 10-100 TeV and>100 TeV with high significance,by analyzing the KM2A data of 136 live days between December 2019 and May 2020.With the observations,we test the detector performance,including angular resolution,pointing accuracy and cosmic-ray background rejection power.The energy spectrum of the Crab Nebula in the energy range 10-250 TeV fits well with a single power-law function dN/dE=(1.13±0.05stat±0.08sys)×10^(-14).(E/20 TeV)-309±0.06stat±0.02syscm^(-2) s^(-1) TeV^(-1).It is consistent with previous measurements by other experiments.This opens a new window of γ-ray astronomy above 0.1 PeV through which new ultrahigh-energy γ-ray phenomena,such as cosmic PeVatrons,might be discovered. 展开更多
关键词 Γ-RAY Crab Nebula extensive air showers cosmic rays
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Performance of LHAASO-WCDA and observation of the Crab Nebula as a standard candle 被引量:5
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作者 F.Aharonian Q.An +257 位作者 Axikegu L.X.Bai Y.X.Bai Y.W.Bao D.Bastieri X.J.Bi Y.J.Bi H.Cai J.T.Cai Z.Cao Z.Cao J.Chang J.F.Chang X.C.Chang B.M.Chen J.Chen L.Chen L.Chen L.Chen M.J.Chen M.L.Chen Q.H.Chen S.H.Chen S.Z.Chen T.L.Chen X.L.Chen Y.Chen N.Cheng Y.D.Cheng S.W.Cui X.H.Cui Y.D.Cui B.Z.Dai H.L.Dai Z.G.Dai Danzengluobu D.della Volpe B.D'Ettorre Piazzoli X.J.Dong J.H.Fan Y.Z.Fan Z.X.Fan J.Fang K.Fang C.F.Feng L.Feng S.H.Feng Y.L.Feng B.Gao C.D.Gao Q.Gao W.Gao M.M.Ge L.S.Geng G.H.Gong Q.B.Gou M.H.Gu J.G.Guo X.L.Guo Y.Q.Guo Y.Y.Guo Y.A.Han H.H.He H.N.He J.C.He S.L.He X.B.He Y.He M.Heller Y.K.Hor C.Hou X.Hou H.B.Hu S.Hu S.C.Hu X.J.Hu D.H.Huang Q.L.Huang W.H.Huang X.T.Huang Z.C.Huang F.Ji X.L.Ji H.Y.Jia K.Jiang Z.J.Jiang C.Jin D.Kuleshov K.Levochkin B.B.Li C.Li C.Li F.Li H.B.Li H.C.Li H.Y.Li J.Li K.Li W.L.Li X.Li X.Li X.R.Li Y.Li Y.Z.Li Z.Li Z.Li E.W.Liang Y.F.Liang S.J.Lin B.Liu C.Liu D.Liu H.Liu H.D.Liu J.Liu J.L.Liu J.S.Liu J.Y.Liu M.Y.Liu R.Y.Liu S.M.Liu W.Liu Y.N.Liu Z.X.Liu W.J.Long R.Lu H.K.Lv B.Q.Ma L.L.Ma X.H.Ma J.R.Mao A.Masood W.Mitthumsiri T.Montaruli Y.C.Nan B.Y.Pang P.Pattarakijwanich Z.Y.Pei M.Y.Qi B.Q.Qiao D.Ruffolo V.Rulev A.Saiz L.Shao O.Shchegolev X.D.Sheng J.R.Shi H.C.Song Yu.V.Stenkin V.Stepanov Q.N.Sun X.N.Sun Z.B.Sun P.H.T.Tam Z.B.Tang W.W.Tian B.D.Wang C.Wang H.Wang H.G.Wang J.C.Wang J.S.Wang L.P.Wang L.Y.Wang R.N.Wang W.Wang W.Wang X.G.Wang X.J.Wang X.Y.Wang Y.D.Wang Y.J.Wang Y.P.Wang Z.Wang Z.Wang Z.H.Wang Z.X.Wang D.M.Wei J.J.Wei Y.J.Wei T.Wen C.Y.Wu H.R.Wu S.Wu W.X.Wu X.F.Wu S.Q.Xi J.Xia J.J.Xia G.M.Xiang G.Xiao H.B.Xiao G.G.Xin Y.L.Xin Y.Xing D.L.Xu R.X.Xu L.Xue D.H.Yan C.W.Yang F.F.Yang J.Y.Yang L.L.Yang M.J.Yang R.Z.Yang S.B.Yang Y.H.Yao Z.G.Yao Y.M.Ye L.Q.Yin N.Yin X.H.You Z.Y.You Y.H.Yu Q.Yuan H.D.Zeng T.X.Zeng W.Zeng Z.K.Zeng M.Zha X.X.Zhai B.B.Zhang H.M.Zhang H.Y.Zhang J.L.Zhang J.W.Zhang L.Zhang L.Zhang L.X.Zhang P.F.Zhang P.P.Zhang R.Zhang S.R.Zhang S.S.Zhang X.Zhang X.P.Zhang Y.Zhang Y.Zhang Y.F.Zhang Y.L.Zhang B.Zhao J.Zhao L.Zhao L.Z.Zhao S.P.Zhao F.Zheng y.zheng B.Zhou H.Zhou J.N.Zhou P.Zhou R.Zhou X.X.Zhou C.G.Zhu F.R.Zhu H.Zhu K.J.Zhu X.Zuo 《Chinese Physics C》 SCIE CAS CSCD 2021年第8期166-181,共16页
The first Water Cherenkov detector of the LHAASO experiment(WCDA-1)has been operating since April 2019.The data for the first year have been analyzed to test its performance by observing the Crab Nebula as a standard ... The first Water Cherenkov detector of the LHAASO experiment(WCDA-1)has been operating since April 2019.The data for the first year have been analyzed to test its performance by observing the Crab Nebula as a standard candle.The WCDA-1 achieves a sensitivity of 65 mCU per year,with a statistical threshold of 5 cr.To accomplish this,a 97.7%cosmic-ray background rejection rate around 1 TeV and 99.8%around 6 TeV with an ap proximate photon acceptance of 50%is achieved after applying an algorithm to separate gamma-induced showers.The angular resolution is measured using the Crab Nebula as a point source to be approximately 0.45°at 1 TeV and better than 0.2°above 6 TeV,with a pointing accuracy better than 0.05°.These values all match the design specifications.The energy resolution is found to be 33%for gamma rays around 6 TeV.The spectral energy distribution of the Crab Nebula in the range from 500 GeV to 15.8 TeV is measured and found to be in agreement with the results from other TeV gamma ray observatories. 展开更多
关键词 LHAASO-WCDA Crab Nebula angular resolution spectral energy distribution
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Evidence of a J/ψΛstructure and observation of excited■^(-)states in the■b^(-)→J/ψΛK^(-) decay 被引量:2
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作者 R.Aaij C.Abellán Beteta +966 位作者 T.Ackernley B.Adeva M.Adinolfi H.Afsharnia C.A.Aidala S.Aiola Z.Ajaltouni S.Akar J.Albrecht F.Alessio M.Alexander A.Alfonso Albero Z.Aliouche G.Alkhazov P.Alvarez Cartelle S.Amato Y.Amhis L.An L.Anderlini A.Andreianov M.Andreotti F.Archilli A.Artamonov M.Artuso K.Arzymatov E.Aslanides M.Atzeni B.Audurier S.Bachmann M.Bachmayer J.J.Back S.Baker P.Baladron Rodriguez V.Balagura W.Baldini J.Baptista Leite R.J.Barlow S.Barsuk W.Barter M.Bartolini F.Baryshnikov J.M.Basels G.Bassi B.Batsukh A.Battig A.Bay M.Becker F.Bedeschi I.Bediaga A.Beiter V.Belavin S.Belin V.Bellee K.Belous I.Belov I.Belyaev G.Bencivenni E.Ben-Haim A.Berezhnoy R.Bernet D.Berninghoff H.C.Bernstein C.Bertella E.Bertholet A.Bertolin C.Betancourt F.Betti Ia.Bezshyiko S.Bhasin J.Bhom L.Bian M.S.Bieker S.Bifani P.Billoir M.Birch F.C.R.Bishop A.Bizzeti M.Bj┆rn M.P.Blago T.Blake F.Blanc S.Blusk D.Bobulska J.A.Boelhauve O.Boente Garcia T.Boettcher A.Boldyrev A.Bondar N.Bondar S.Borghi M.Borisyak M.Borsato J.T.Borsuk S.A.Bouchiba T.J.V.Bowcock A.Boyer C.Bozzi M.J.Bradley S.Braun A.Brea Rodriguez M.Brodski J.Brodzicka A.Brossa Gonzalo D.Brundu A.Buonaura C.Burr A.Bursche A.Butkevich J.S.Butter J.Buytaert W.Byczynski S.Cadeddu H.Cai R.Calabrese L.Calefice L.Calero Diaz S.Cali R.Calladine M.Calvi M.Calvo Gomez P.Camargo Magalhaes A.Camboni P.Campana A.F.Campoverde Quezada S.Capelli L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini I.Carli P.Carniti L.Carus K.Carvalho Akiba A.Casais Vidal G.Casse M.Cattaneo G.Cavallero S.Celani J.Cerasoli A.J.Chadwick M.G.Chapman M.Charles Ph.Charpentier G.Chatzikonstantinidis C.A.Chavez Barajas M.Chefdeville C.Chen S.Chen A.Chernov S.-G.Chitic V.Chobanova S.Cholak M.Chrzaszcz A.Chubykin V.Chulikov P.Ciambrone M.F.Cicala X.Cid Vidal G.Ciezarek P.E.L.Clarke M.Clemencic H.V.Cliff J.Closier J.L.Cobbledick V.Coco J.A.B.Coelho J.Cogan E.Cogneras L.Cojocariu P.Collins T.Colombo L.Congedo A.Contu N.Cooke G.Coombs G.Corti C.M.Costa Sobral B.Couturier D.C.Craik J.Crkovská M.Cruz Torres R.Currie C.L.Da Silva E.Dall’Occo J.Dalseno C.D’Ambrosio A.Danilina P.d’Argent A.Davis O.De Aguiar Francisco K.De Bruyn S.De Capua M.De Cian J.M.De Miranda L.De Paula M.De Serio D.De Simone P.De Simone J.A.de Vries C.T.Dean W.Dean D.Decamp L.Del Buono B.Delaney H.-P.Dembinski A.Dendek V.Denysenko D.Derkach O.Deschamps F.Desse F.Dettori B.Dey P.Di Nezza S.Didenko L.Dieste Maronas H.Dijkstra V.Dobishuk A.M.Donohoe F.Dordei A.C.dos Reis L.Douglas A.Dovbnya A.G.Downes K.Dreimanis M.W.Dudek L.Dufour V.Duk P.Durante J.M.Durham D.Dutta M.Dziewiecki A.Dziurda A.Dzyuba S.Easo U.Egede V.Egorychev S.Eidelman S.Eisenhardt S.Ek-In L.Eklund S.Ely A.Ene E.Epple S.Escher J.Eschle S.Esen T.Evans A.Falabella J.Fan Y.Fan B.Fang N.Farley S.Farry D.Fazzini P.Fedin M.Féo P.Fernandez Declara A.Fernandez Prieto J.M.Fernandeztenllado Arribas F.Ferrari L.Ferreira Lopes F.Ferreira Rodrigues S.Ferreres Sole M.Ferrillo M.Ferro-Luzzi S.Filippov R.A.Fini M.Fiorini M.Firlej K.M.Fischer C.Fitzpatrick T.Fiutowski F.Fleuret M.Fontana F.Fontanelli R.Forty V.Franco Lima M.Franco Sevilla M.Frank E.Franzoso G.Frau C.Frei D.A.Friday J.Fu Q.Fuehring W.Funk E.Gabriel T.Gaintseva A.Gallas Torreira D.Galli S.Gambetta Y.Gan M.Gandelman P.Gandini Y.Gao M.Garau L.M.Garcia Martin P.Garcia Moreno J.García Pardiñas B.Garcia Plana F.A.Garcia Rosales L.Garrido C.Gaspar R.E.Geertsema D.Gerick L.L.Gerken E.Gersabeck M.Gersabeck T.Gershon D.Gerstel Ph.Ghez V.Gibson M.Giovannetti A.Gioventù P.Gironella Gironell L.Giubega C.Giugliano K.Gizdov E.L.Gkougkousis V.V.Gligorov C.Göbel E.Golo-bardes D.Golubkov A.Golutvin A.Gomes S.Gomez Fernandez F.Goncalves Abrantes M.Goncerz G.Gong P.Gorbounov I.V.Gorelov C.Gotti E.Govorkova J.P.Grabowski R.Graciani Diaz T.Grammatico L.A.Granado Cardoso E.Graugés E.Graverini G.Graziani A.Grecu L.M.Greeven P.Griffith L.Grillo S.Gromov B.R.Gruberg Cazon C.Gu M.Guarise P.A.Günther E.Gushchin A.Guth Y.Guz T.Gys T.Hadavizadeh G.Haefeli C.Haen J.Haimberger T.Halewood-leagas P.M.Hamilton Q.Han X.Han T.H.Hancock S.Hansmann-Menzemer N.Harnew T.Harrison C.Hasse M.Hatch J.He M.Hecker K.Heijhoff K.Heinicke A.M.Hennequin K.Hennessy L.Henry J.Heuel A.Hicheur D.Hill M.Hilton S.E.Hollitt J.Hu J.Hu W.Hu W.Huang X.Huang W.Hulsbergen R.J.Hunter M.Hushchyn D.Hutchcroft D.Hynds P.Ibis M.Idzik D.Ilin P.Ilten A.Inglessi A.Ishteev K.Ivshin R.Jacobsson S.Jakobsen E.Jans B.K.Jashal A.Jawahery V.Jevtic M.Jezabek F.Jiang M.John D.Johnson C.R.Jones T.P.Jones B.Jost N.Jurik S.Kandybei Y.Kang M.Karacson M.Karpov N.Kazeev F.Keizer M.Kenzie T.Ketel B.Khanji A.Kharisova S.Kholodenko K.E.Kim T.Kirn V.S.Kirsebom O.Kitouni S.Klaver K.Klimaszewski S.Koliiev A.Kondybayeva A.Konoplyannikov P.Kopciewicz R.Kopecna P.Koppenburg M.Korolev I.Kostiuk O.Kot S.Kotriakhova P.Kravchenko L.Kravchuk R.D.Krawczyk M.Kreps F.Kress S.Kretzschmar P.Krokovny W.Krupa W.Krzemien W.Kucewicz M.Kucharczyk V.Kudryavtsev H.S.Kuindersma G.J.Kunde T.Kvaratskheliya D.Lacarrere G.Lafferty A.Lai A.Lampis D.Lancierini J.J.Lane R.Lane G.Lanfranchi C.Langenbruch J.Langer O.Lantwin T.Latham F.Lazzari R.Le Gac S.H.Lee R.Lefèvre A.Leflat S.Legotin O.Leroy T.Lesiak B.Leverington H.Li L.Li P.Li Y.Li Y.Li Z.Li X.Liang T.Lin R.Lindner V.Lisovskyi R.Litvinov G.Liu H.Liu S.Liu X.Liu A.Loi J.Lomba Castro I.Longstaff J.H.Lopes G.Loustau G.H.Lovell Y.Lu D.Lucchesi S.Luchuk M.Lucio Martinez V.Lukashenko Y.Luo A.Lupato E.Luppi O.Lupton A.Lusiani X.Lyu L.Ma R.Ma S.Maccolini F.Machefert F.Maciuc V.Macko P.Mackowiak S.Maddrell-Mander O.Madejczyk L.R.Madhan Mohan O.Maev A.Maevskiy D.Maisuzenko M.W.Majewski J.J.Malczewski S.Malde B.Malecki A.Malinin T.Maltsev H.Malygina G.Manca G.Mancinelli R.Manera Escalero D.Manuzzi D.Marangotto J.Maratas J.F.Marchand U.Marconi S.Mariani C.Marin Benito M.Marinangeli P.Marino J.Marks P.J.Marshall G.Martellotti L.Martinazzoli M.Martinelli D.Martinez Santos F.Martinez Vidal A.Massafferri M.Materok R.Matev A.Mathad Z.Mathe V.Matiunin C.Matteuzzi K.R.Mattioli A.Mauri E.Maurice J.Mauricio M.Mazurek M.McCann L.Mcconnell T.H.Mcgrath A.McNab R.McNulty J.V.Mead B.Meadows C.Meaux G.Meier N.Meinert D.Melnychuk S.Meloni M.Merk A.Merli L.Meyer Garcia M.Mikhasenko D.A.Milanes E.Millard M.Milovanovic M.-N.Minard L.Minzoni S.E.Mitchell B.Mitreska D.S.Mitzel A.Mödden R.A.Mohammed R.D.Moise T.Mombächer I.A.Monroy S.Monteil M.Morandin G.Morello M.J.Morello J.Moron A.B.Morris A.G.Morris R.Mountain H.Mu F.Muheim M.Mukherjee M.Mulder D.Müller K.Müller C.H.Murphy D.Murray P.Muzzetto P.Naik T.Nakada R.Nandakumar T.Nanut I.Nasteva M.Needham I.Neri I.Neri S.Neubert N.Neufeld R.Newcombe T.D.Nguyen C.Nguyen-Mau E.M.Niel S.Nieswand N.Nikitin N.S.Nolte C.Nunez A.Oblakowska-Mucha V.Obraztsov D.P.O’Hanlon R.Oldeman M.E.Olivares C.J.G.Onderwater A.Ossowska J.M.Otalora Goicochea T.Ovsiannikova P.Owen A.Oyanguren B.Pagare P.R.Pais T.Pajero A.Palano M.Palutan Y.Pan G.Panshin A.Papanestis M.Pappagallo L.L.Pappalardo C.Pappenheimer W.Parker C.Parkes 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W.Wislicki M.Witek L.Witola G.Wormser S.A.Wotton H.Wu K.Wyllie Z.Xiang D.Xiao Y.Xie A.Xu J.Xu L.Xu M.Xu Q.Xu Z.Xu Z.Xu D.Yang S.Yang Y.Yang Z.Yang Z.Yang Y.Yao L.E.Yeomans H.Yin J.Yu X.Yuan O.Yushchenko E.Zaffaroni K.A.Zarebski M.Zavertyaev M.Zdybal O.Zenaiev M.Zeng D.Zhang L.Zhang S.Zhang Y.Zhang Y.Zhang A.Zhelezov y.zheng X.Zhou Y.Zhou X.Zhu V.Zhukov J.B.Zonneveld S.Zucchelli D.Zuliani G.Zunica 《Science Bulletin》 SCIE EI CSCD 2021年第13期1278-1287,M0003,共11页
First evidence of a structure in the J/ψΛinvariant mass distribution is obtained from an amplitude analysis of■b^(-)J/ψΛK^(-)decays.The observed structure is consistent with being due to a charmonium pentaquark w... First evidence of a structure in the J/ψΛinvariant mass distribution is obtained from an amplitude analysis of■b^(-)J/ψΛK^(-)decays.The observed structure is consistent with being due to a charmonium pentaquark with strangeness with a significance of 3.1r including systematic uncertainties and lookelsewhere effect.Its mass and width are determined to be 4458:8±2:9t4:7-1:1 MeV and 17:3±6:5t8:0-5:7 MeV,respectively,where the quoted uncertainties are statistical and systematic.The structure is also consistent with being due to two resonances.In addition,the narrow excited■^(-)states,N■(1690)and■(1820),are seen for the first time in a■b^(-)decay,and their masses and widths are measured with improved precision.The analysis is performed using pp collision data corresponding to a total integrated luminosity of 9 fb^(-1),collected with the LHCb experiment at centre-of-mass energies of 7,8 and 13 TeV. 展开更多
关键词 QCD EXOTICS PENTAQUARK Spectroscopy Quarkonium Particle and resonance production
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Search for the doubly charmed baryon ■ 被引量:2
13
作者 R.Aaij C.Abellán Beteta +907 位作者 T.Ackernley B.Adeva M.Adinolfi H.Afsharnia C.A.Aidala S.Aiola Z.Ajaltouni S.Akar P.Albicocco J.Albrecht F.Alessio M.Alexander A.Alfonso Albero G.Alkhazov P.Alvarez Cartelle A.A.Alves Jr S.Amato Y.Amhis L.An L.Anderlini G.Andreassi M.Andreotti F.Archilli J.Arnau Romeu A.Artamonov M.Artuso K.Arzymatov E.Aslanides M.Atzeni B.Audurier S.Bachmann J.J.Back S.Baker V.Balagura W.Baldini A.Baranov R.J.Barlow S.Barsuk W.Barter M.Bartolini F.Baryshnikov G.Bassi V.Batozskaya B.Batsukh A.Battig V.Battista A.Bay M.Becker F.Bedeschi I.Bediaga A.Beiter L.J.Bel V.Belavin S.Belin N.Beliy V.Bellee K.Belous I.Belyaev G.Bencivenni E.Ben-Haim S.Benson S.Beranek A.Berezhnoy R.Bernet D.Berninghoff H.C.Bernstein E.Bertholet A.Bertolin C.Betancourt F.Betti M.O.Bettler Ia.Bezshyiko S.Bhasin J.Bhom M.S.Bieker S.Bifani P.Billoir A.Birnkraut A.Bizzeti M.Bjφrn M.P.Blago T.Blake F.Blanc S.Blusk D.Bobulska V.Bocci O.Boente Garcia T.Boettcher A.Boldyrev A.Bondar N.Bondar S.Borghi 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Oliveira G.Simi S.Simone I.Skiba N.Skidmore T.Skwarnicki M.W.Slater J.G.Smeaton A.Smetkina E.Smith I.T.Smith M.Smith A.Snoch M.Soares L.Soares Lavra M.D.Sokoloff F.J.P.Soler B.Souza De Paula B.Spaan E.Spadaro Norella P.Spradlin F.Stagni M.Stahl S.Stahl P.Stefko S.Stefkova O.Steinkamp S.Stemmle O.Stenyakin M.Stepanova H.Stevens A.Stocchi S.Stone S.Stracka M.E.Stramaglia M.Straticiuc U.Straumann S.Strokov J.Sun L.Sun Y.Sun P.Svihra K.Swientek A.Szabelski T.Szumlak M.Szymanski S.Taneja Z.Tang T.Tekampe G.Tellarini F.Teubert E.Thomas K.A.Thomson M.J.Tilley V.Tisserand S.T'Jampens M.Tobin S.Tolk L.Tomassetti D.Tonelli D.Y.Tou E.Tournefier M.Traill M.T.Tran A.Trisovic A.Tsaregorodtsev G.Tuci A.Tully N.Tuning A.Ukleja A.Usachov A.Ustyuzhanin U.Uwer A.Vagner V.Vagnoni A.Valassi G.Valenti M.van Beuzekom H.Van Hecke E.van Herwijnen C.B.Van Hulse J.van Tilburg M.van Veghel R.Vazquez Gomez P.Vazquez Regueiro C.Vazquez Sierra S.Vecchi J.J.Velthuis M.Veltri A.Venkateswaran M.Vernet M.Veronesi M.Vesterinen J.V.Viana Barbosa D.Vieira M.Vieites Diaz H.Viemann X.Vilasis-Cardona A.Vitkovskiy V.Volkov A.Vollhardt D.Vom Bruch A.Vorobyev V.Vorobyev N.Voropaev R.Waldi J.Walsh J.Wang J.Wang M.Wang Y.Wang Z.Wang D.R.Ward H.M.Wark N.K.Watson D.Websdale A.Weiden C.Weisser B.D.C.Westhenry D.J.White M.Whitehead D.Wiedner G.Wilkinson M.Wilkinson I.Williams M.Williams M.R.J.Williams T.Williams F.F.Wilson M.Winn W.Wislicki M.Witek G.Wormser S.A.Wotton H.Wu K.Wyllie Z.Xiang D.Xiao Y.Xie H.Xing A.Xu L.Xu M.Xu Q.Xu Z.Xu Z.Xu Z.Yang Z.Yang Y.Yao L.E.Yeomans H.Yin J.Yu X.Yuan O.Yushchenko K.A.Zarebski M.Zavertyaev M.Zdybal M.Zeng D.Zhang L.Zhang S.Zhang W.C.Zhang Y.Zhang A.Zhelezov y.zheng X.Zhou Y.Zhou X.Zhu V.Zhukov J.B.Zonneveld S.Zucchelli 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2020年第2期8-22,共15页
A search for the doubly charmed baryon ■^+cc is performed through its decay to theΛ^+c K^-π^+ final state,using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7,8 and 13... A search for the doubly charmed baryon ■^+cc is performed through its decay to theΛ^+c K^-π^+ final state,using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7,8 and 13 TeV.The data correspond to a total integrated luminosity of 9 fb^-1.No significant signal is observed in the mass range from 3.4 to 3.8 GeV/c^2.Upper limits are set at 95%credibility level on the ratio of the ■^+cc production cross-section times the branching fraction to that ofΛ^+c and ■^++cc baryons.The limits are determined as functions of the ■^+cc mass for different lifetime hypotheses,in the rapidity range from 2.0 to 4.5 and the transverse momentum range from 4 to 15 GeV/c. 展开更多
关键词 charmed baryons limits on production of particles charmed quarks experimental tests
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Geometrical reconstruction of fluorescence events observed by the LHAASO experiment 被引量:1
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作者 F.Aharonian Q.An +258 位作者 Axikegu L.X.Bai Y.X.Bai Y.W.Bao D.Bastieri X.J.Bi Y.J.Bi H.Cai J.T.Cai Z.Cao Z.Cao J.Chang J.F.Chang X.C.Chang B.M.Chen J.Chen L.Chen L.Chen L.Chen M.J.Chen M.L.Chen Q.H.Chen S.H.Chen S.Z.Chen T.L.Chen X.L.Chen Y.Chen N.Cheng Y.D.Cheng S.W.Cui X.H.Cui Y.D.Cui B.Z.Dai H.L.Dai Z.G.Dai Danzengluobu D.della Volpe B.DEtorre Piazzoli X.J.Dong J.H.Fan Y.Z.Fan Z.X.Fan J.Fang J.Fang C.F.Feng L.Feng S.H.Feng Y.L.Feng B.Gao C.D.Gao Q.Gao W.Gao M.M.Ge L.S.Geng G.H.Gong Q.B.Gou M.H.Gu J.G.Guo X.L.Guo Y.Q.Guo Y.Y.Guo Y.A.Han H.H.He H.N.He J.C.He S.L.He X.B.He Y.He M.Heller Y.K.Hor C.Hou X.Hou H.B.Hu S.Hu S.C.Hu X.J.Hu D.H.Huang Q.L.Huang W.H.Huang X.T.Huang Z.C.Huang F.Ji X.L.Ji H.Y.Jia K.Jiang Z.J.Jiang C.Jin D.Kuleshov K.Levochkin B.B.Li C.Li C.Li F.Li H.B.Li H.C.Li H.Y.Li J.Li K.Li W.L.Li X.Li X.Li X.R.Li Y.Li Y.Z.Li Z.Li Z.Li E.W.Liang Y.F.Liang S.J.Lin B.Liu C.Liu D.Liu H.Liu H.D.Liu J.Liu J.L.Liu J.L.Liu J.S.Liu J.Y.Liu M.Y.Liu R.Y.Liu S.M.Liu W.Liu Y.N.Liu Z.X.Liu W.J.Long R.Lu H.K.Lv B.Q.Ma L.L.Ma X.H.Ma J.R.Mao A.Masood W.Mitthumsiri T.Montaruli Y.C.Nan B.Y..Pang P.Pattarakijwanich Z.Y.Pei M.Y.Qi D.Ruffolo V.Rulev A.Saiz L.Shao O.Shchegolev X.D.Sheng J.R.Shi H.C.Song Yu.V.Stenkin V.Stepanov Q.N.Sun X.N.Sun Z.B.Sun P.H.T.Tam Z.B.Tang W.W.Tian B.D.Wang C.Wang H.Wang H.G.Wang J.C.Wang J.S.Wang L.P.Wang L.Y.Wang R.N.Wang W.Wang W.Wang X.G.Wang X.J.Wang X.Y.Wang Y.D.Wang Y.J.Wang Y.P.Wang Z.Wang Z.Wang Z.H.Wang Z.X.Wang D.M.Wei J.J.Wei Y.J.Wei T.Wen C.Y.Wu H.R.Wu S.Wu W.X.Wu X.F.Wu S.Q.Xi J.Xia J.J.Xia G.M.Xiang G.Xiao H.B.Xiao G.G.Xin Y.L.Xin Y.Xing D.L.Xu R.X.Xu L.Xue D.H.Yan C.W.Yang F.F.Yang J.Y.Yang L.L.Yang M.J.Yang R.Z.Yang S.B.Yang Y.H.Yao Z.G.Yao Y.M.Ye L.Q.Yin N.Yin X.H.You Z.Y.You Y.H.Yu Q.Yuan H.D.Zeng T.X.Zeng W.Zeng Z.K.Zeng M.Zha X.X.Zhai B.B.Zhang H.M.Zhang H.Y.Zhang J.L.Zhang J.W.Zhang L.Zhang L.Zhang L.X.Zhang P.F.Zhang P.F.Zhang R.Zhang S.R.Zhang S.S.Zhang X.Zhang X.P.Zhang Y.Zhang Y.Zhang Y.F.Zhang Y.L.Zhang B.Zhao J.Zhao L.Zhao L.Z.Zhao S.P.Zhao F.Zheng y.zheng B.Zhou H.Zhou J.N.Zhou P.Zhou R.Zhou X.X.Zhou C.G.Zhu F.R.Zhu H.Zhu K.J.Zhu X.Zuo 《Chinese Physics C》 SCIE CAS CSCD 2021年第4期416-425,共10页
The LHAASO-WFCTA experiment,which aims to observe cosmic rays in the sub-EeV range using the fluorescence technique,uses a new generation of high-performance telescopes.To ensure that the experiment has ex-cellent det... The LHAASO-WFCTA experiment,which aims to observe cosmic rays in the sub-EeV range using the fluorescence technique,uses a new generation of high-performance telescopes.To ensure that the experiment has ex-cellent detection capability associated with the measurement of the energy spectrum,the primary composition of cosmic rays,and so on,an accurate geometrical reconstruction of air-shower events is fundamental.This paper de-scribes the development and testing of geometrical reconstruction for stereo viewed events using the WFCTA(Wide Field of view Cherenkov/Fluorescence Telescope Array)detectors.Two approaches,which take full advantage ofthe WFCTA detectors.are investigated.One is the stereo-angular method,which uses the pointing of triggered SiPMs in the shower trajectory,and the other is the stereo-timing method,which uses the triggering time of the fired SiPMs.The results show that both methods have good geometrical resolution:the resolution of the stereo-timing method is slightly better than the stereo-angular method because the resolution of the latter is slightly limited by the shower track length. 展开更多
关键词 cosmic ray fluorescence telescope stereo observation geometrical reconstruction
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Measurement of Ξcc++ production in pp collisions at s1/2=13 TeV 被引量:1
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作者 R.Aaij C.Abellán Beteta +903 位作者 T.Ackernley B.Adeva M.Adinolfi H.Afsharnia C.A.Aidala S.Aiola Z.Ajaltouni S.Akar P.Albicocco J.Albrecht F.Alessio M.Alexander A.Alfonso Albero G.Alkhazov P.Alvarez Cartelle A.A.Alves Jr S.Amato Y.Amhis L.An L.Anderlini G.Andreassi M.Andreotti F.Archilli A.Artamonov M.Artuso K.Arzymatov E.Aslanides M.Atzeni B.Audurier S.Bachmann J.J.Back S.Baker V.Balagura W.Baldini A.Baranov R.J.Barlow S.Barsuk W.Barter M.Bartolini F.Baryshnikov J.M.Basels G.Bassi V.Batozskaya B.Batsukh A.Battig A.Bay M.Becker F.Bedeschi I.Bediaga A.Beiter L.J.Bel V.Belavin S.Belin V.Bellee K.Belous I.Belyaev G.Bencivenni E.Ben-Haim S.Benson S.Beranek A.Berezhnoy R.Bernet D.Berninghoff H.C.Bernstein C.Bertella E.Bertholet A.Bertolin C.Betancourt F.Betti M.O.Bettler Ia.Bezshyiko S.Bhasin J.Bhom M.S.Bieker S.Bifani P.Billoir A.Bizzeti M.Bjørn M.P.Blago T.Blake F.Blanc S.Blusk D.Bobulska V.Bocci O.Boente Garcia T.Boettcher A.Boldyrev A.Bondar N.Bondar S.Borghi M.Borisyak M.Borsato J.T.Borsuk T.J.V.Bowcock C.Bozzi M.J.Bradley S.Braun A.Brea Rodriguez M.Brodski J.Brodzicka A.Brossa Gonzalo D.Brundu E.Buchanan A.Buonaura C.Burr A.Bursche A.Butkevich J.S.Butter J.Buytaert W.Byczynski S.Cadeddu H.Cai R.Calabrese L.Calero Diaz S.Cali R.Calladine M.Calvi M.Calvo Gomez P.Camargo Magalhaes A.Camboni P.Campana D.H.Campora Perez A.F.Campoverde Quezada L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini I.Carli P.Carniti K.Carvalho Akiba A.Casais Vidal G.Casse M.Cattaneo G.Cavallero S.Celani R.Cenci J.Cerasoli M.G.Chapman M.Charles Ph.Charpentier G.Chatzikonstantinidis M.Chefdeville V.Chekalina C.Chen S.Chen A.Chernov S.-G.Chitic V.Chobanova S.Cholak M.Chrzaszcz A.Chubykin P.Ciambrone M.F.Cicala X.Cid Vidal G.Ciezarek F.Cindolo P.E.L.Clarke M.Clemencic H.V.Cliff J.Closier J.L.Cobbledick V.Coco J.A.B.Coelho J.Cogan E.Cogneras L.Cojocariu P.Collins T.Colombo A.Comerma-Montells A.Contu N.Cooke G.Coombs S.Coquereau G.Corti C.M.Costa Sobral B.Couturier D.C.Craik J.Crkovska A.Crocombe M.Cruz Torres R.Currie C.L.Da Silva E.Dall'Occo J.Dalseno C.D'Ambrosio A.Danilina P.d'Argent A.Davis O.De Aguiar Francisco K.De Bruyn S.De Capua M.De Cian J.M.De Miranda L.De Paula M.De Serio P.De Simone J.A.de Vries C.T.Dean W.Dean D.Decamp L.Del Buono B.Delaney H.-P.Dembinski A.Dendek V.Denysenko D.Derkach O.Deschamps F.Desse F.Dettori B.Dey A.Di Canto P.Di Nezza S.Didenko H.Dijkstra V.Dobishuk F.Dordei M.Dorigo A.C.dos Reis L.Douglas A.Dovbnya K.Dreimanis M.W.Dudek L.Dufour G.Dujany P.Durante J.M.Durham D.Dutta M.Dziewiecki A.Dziurda A.Dzyuba S.Easo U.Egede V.Egorychev S.Eidelman S.Eisenhardt R.Ekelhof S.Ek-In L.Eklund S.Ely A.Ene E.Epple S.Escher S.Esen T.Evans A.Falabella J.Fan N.Farley S.Farry D.Fazzini P.Fedin M.Féo P.Fernandez Declara A.Fernandez Prieto F.Ferrari L.Ferreira Lopes F.Ferreira Rodrigues S.Ferreres Sole M.Ferrillo M.Ferro-Luzzi S.Filippov R.A.Fini M.Fiorini M.Firlej K.M.Fischer C.Fitzpatrick T.Fiutowski F.Fleuret M.Fontana F.Fontanelli R.Forty V.Franco Lima M.Franco Sevilla M.Frank C.Frei D.A.Friday J.Fu M.Fuehring W.Funk E.Gabriel A.Gallas Torreira D.Galli S.Gallorini S.Gambetta Y.Gan M.Gandelman P.Gandini Y.Gao L.M.Garcia Martin J.García Pardiñas B.Garcia Plana F.A.Garcia Rosales L.Garrido44 D.Gascon C.Gaspar D.Gerick E.Gersabeck M.Gersabeck T.Gershon D.Gerstel Ph.Ghez V.Gibson A.Gioventù O.G.Girard P.Gironell Gironell L.Giubega C.Giugliano K.Gizdov V.V.Gligorov C.Göbel D.Golubkov A.Golutvin A.Gomes P.Gorbounov I.V.Gorelov C.Gotti E.Govorkova J.P.Grabowski R.Graciani Diaz T.Grammatico L.A.Granado Cardoso E.Graugés E.Graverini G.Graziani A.Grecu R.Greim P.Griffith L.Grillo L.Gruber B.R.Gruberg Cazon C.Gu E.Gushchin A.Guth Yu.Guz T.Gys P.A.Günther T.Hadavizadeh G.Haefeli C.Haen S.C.Haines P.M.Hamilton Q.Han X.Han T.H.Hancock S.Hansmann-Menzemer N.Harnew T.Harrison R.Hart C.Hasse M.Hatch J.He M.Hecker K.Heijhoff K.Heinicke A.M.Hennequin K.Hennessy L.Henry J.Heuel A.Hicheur D.Hill M.Hilton P.H.Hopchev J.Hu W.Hu W.Huang W.Hulsbergen T.Humair R.J.Hunter M.Hushchyn D.Hutchcroft D.Hynds P.Ibis M.Idzik P.Ilten A.Inglessi K.Ivshin R.Jacobsson S.Jakobsen E.Jans B.K.Jashal A.Jawahery V.Jevtic F.Jiang M.John D.Johnson C.R.Jones B.Jost N.Jurik S.Kandybei M.Karacson J.M.Kariuki N.Kazeev M.Kecke F.Keizer M.Kelsey M.Kenzie T.Ketel B.Khanji A.Kharisova K.E.Kim T.Kirn V.S.Kirsebom S.Klaver K.Klimaszewski S.Koliiev A.Kondybayeva A.Konoplyannikov P.Kopciewicz R.Kopecna P.Koppenburg I.Kostiuk O.Kot S.Kotriakhova L.Kravchuk R.D.Krawczyk M.Kreps F.Kress S.Kretzschmar P.Krokovny W.Krupa W.Krzemien W.Kucewicz M.Kucharczyk V.Kudryavtsev H.S.Kuindersma G.J.Kunde T.Kvaratskheliya D.Lacarrere G.Lafferty A.Lai D.Lancierini J.J.Lane G.Lanfranchi C.Langenbruch O.Lantwin T.Latham F.Lazzari C.Lazzeroni R.Le Gac R.Lefèvre A.Leflat O.Leroy T.Lesiak B.Leverington H.Li L.Li X.Li Y.Li Z.Li X.Liang R.Lindner V.Lisovskyi G.Liu X.Liu D.Loh A.Loi J.Lomba Castro I.Longstaff J.H.Lopes G.Loustau G.H.Lovell Y.Lu D.Lucchesi M.Lucio Martinez Y.Luo A.Lupato E.Luppi O.Lupton A.Lusiani X.Lyu S.Maccolini F.Machefert F.Maciuc V.Macko P.Mackowiak S.Maddrell-Mander L.R.Madhan Mohan O.Maev A.Maevskiy D.Maisuzenko M.W.Majewski S.Malde B.Malecki A.Malinin T.Maltsev H.Malygina G.Manca G.Mancinelli R.Manera Escalero D.Manuzzi D.Marangotto J.Maratas J.F.Marchand U.Marconi S.Mariani C.Marin Benito M.Marinangeli P.Marino J.Marks P.J.Marshall G.Martellotti L.Martinazzoli M.Martinelli D.Martinez Santos F.Martinez Vidal A.Massafferri M.Materok R.Matev A.Mathad Z.Mathe V.Matiunin C.Matteuzzi K.R.Mattioli A.Mauri E.Maurice M.McCann L.Mcconnell A.McNab R.McNulty J.V.Mead B.Meadows C.Meaux G.Meier N.Meinert D.Melnychuk S.Meloni M.Merk A.Merli M.Mikhasenko D.A.Milanes E.Millard M.-N.Minard O.Mineev L.Minzoni S.E.Mitchell B.Mitreska D.S.Mitzel A.Mödden A.Mogini R.D.Moise T.Mombächer I.A.Monroy S.Monteil M.Morandin G.Morello M.J.Morello J.Moron A.B.Morris A.G.Morris R.Mountain H.Mu F.Muheim M.Mukherjee M.Mulder D.Müller K.Müller C.H.Murphy D.Murray P.Muzzetto P.Naik T.Nakada R.Nandakumar T.Nanut I.Nasteva M.Needham N.Neri S.Neubert N.Neufeld R.Newcombe T.D.Nguyen C.Nguyen-Mau E.M.Niel S.Nieswand N.Nikitin N.S.Nolte C.Nunez A.Oblakowska-Mucha V.Obraztsov S.Ogilvy D.P.O'Hanlon R.Oldeman C.J.G.Onderwater J.D.Osborn A.Ossowska J.M.Otalora Goicochea T.Ovsiannikova P.Owen49 A.Oyanguren P.R.Pais48 T.Pajero A.Palano M.Palutan G.Panshin A.Papanestis M.Pappagallo L.L.Pappalardo C.Pappenheimer W.Parker C.Parkes G.Passaleva A.Pastore M.Patel C.Patrignani A.Pearce A.Pellegrino M.Pepe Altarelli S.Perazzini D.Pereima P.Perret L.Pescatore K.Petridis A.Petrolini A.Petrov S.Petrucci M.Petruzzo B.Pietrzyk G.Pietrzyk M.Pili D.Pinci J.Pinzino F.Pisani A.Piucci V.Placinta S.Playfer J.Plews M.Plo Casasus F.Polci M.Poli Lener M.Poliakova A.Poluektov N.Polukhina I.Polyakov E.Polycarpo G.J.Pomery S.Ponce A.Popov D.Popov S.Poslavskii K.Prasanth L.Promberger C.Prouve V.Pugatch A.Puig Navarro H.Pullen G.Punzi W.Qian J.Qin R.Quagliani B.Quintana N.V.Raab R.I.Rabadan 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Oliveira G.Simi S.Simone I.Skiba N.Skidmore T.Skwarnicki M.W.Slater J.G.Smeaton A.Smetkina E.Smith I.T.Smith M.Smith A.Snoch M.Soares L.Soares Lavra M.D.Sokoloff F.J.P.Soler B.Souza De Paula B.Spaan E.Spadaro Norella P.Spradlin F.Stagni M.Stahl S.Stahl P.Stefko O.Steinkamp S.Stemmle O.Stenyakin M.Stepanova H.Stevens S.Stone S.Stracka M.E.Stramaglia M.Straticiuc S.Strokov J.Sun L.Sun Y.Sun P.Svihra K.Swientek A.Szabelski T.Szumlak M.Szymanski S.Taneja Z.Tang T.Tekampe F.Teubert E.Thomas K.A.Thomson M.J.Tilley V.Tisserand S.T'Jampens M.Tobin S.Tolk L.Tomassetti D.Tonelli D.Torres Machado D.Y.Tou E.Tournefier M.Traill M.T.Tran E.Trifonova C.Trippl A.Trisovic A.Tsaregorodtsev G.Tuci A.Tully N.Tuning A.Ukleja A.Usachov A.Ustyuzhanin U.Uwer A.Vagner V.Vagnoni A.Valassi G.Valenti M.van Beuzekom H.Van Hecke E.van Herwijnen C.B.Van Hulse M.van Veghel R.Vazquez Gomez P.Vazquez Regueiro C.Vázquez Sierra S.Vecchi J.J.Velthuis M.Veltri A.Venkateswaran M.Vernet M.Veronesi M.Vesterinen J.V.Viana Barbosa D.Vieira M.Vieites Diaz H.Viemann X.Vilasis-Cardona A.Vitkovskiy V.Volkov A.Vollhardt D.Vom Bruch A.Vorobyev V.Vorobyev N.Voropaev R.Waldi J.Walsh J.Wang J.Wang J.Wang M.Wang Y.Wang Z.Wang D.R.Ward H.M.Wark N.K.Watson D.Websdale A.Weiden C.Weisser B.D.C.Westhenry D.J.White M.Whitehead D.Wiedner G.Wilkinson M.Wilkinson I.Williams M.Williams M.R.J.Williams T.Williams F.F.Wilson W.Wislicki M.Witek L.Witola G.Wormser S.A.Wotton H.Wu K.Wyllie Z.Xiang D.Xiao Y.Xie H.Xing A.Xu L.Xu M.Xu Q.Xu Z.Xu Z.Yang Z.Yang Y.Yao L.E.Yeomans H.Yin J.Yu X.Yuan O.Yushchenko K.A.Zarebski M.Zavertyaev M.Zdybal M.Zeng D.Zhang L.Zhang S.Zhang W.C.Zhang Y.Zhang A.Zhelezov y.zheng X.Zhou Y.Zhou X.Zhu V.Zhukov J.B.Zonneveld S.Zucchelli 《Chinese Physics C》 SCIE CAS CSCD 2020年第2期13-23,共11页
The production of ■baryons in proton-proton collisions at a centre-of-mass energy of √s = 13 TeV is measured in the transverse-momentum range 4<pT<15GeV/c and the rapidity range2.0<y<4.5.The data used in... The production of ■baryons in proton-proton collisions at a centre-of-mass energy of √s = 13 TeV is measured in the transverse-momentum range 4<pT<15GeV/c and the rapidity range2.0<y<4.5.The data used in this measurement correspond to an integrated luminosity of 1.7fb^-1,recorded by the LHCb experiment during 2016.The ratio of the ■ production cross-section times the branching fraction of the■→∧^+cK^-π^+ π^+decay relative to the prompt ∧^+c production cross-section is found to be(2.22±0.27±0.29)×10^-4,assuming the central value of the measured lifetime,where the first uncertainty is statistical and the second systematic. 展开更多
关键词 doubly charmed baryons hadron production QCD
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Search for the rare decay B^(0)→J/ψФ
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作者 R.Aaij C.Abellin Beteta +968 位作者 T.Ackernley B.Adeva M.Adinolfi H.Afsharnial C.A.Aidala S.Aiola Z.Ajaltouni S.Akar J.Albrecht F.Alessio M.Alexander A.Alfonso Albero Z.Aliouche G.Alkhazov P.Alvarez Cartelle S.Amato Y.Amhis L.An L.Anderlini A.Andreianov M.Andreotti F.Archilli A.Artamonov M.Artuso K.Arzymatov E.Aslanides M.Atzeni B.Audurier S.Bachmann M.Bachmaver J.J.Back S.Baker P.Baladron Rodriguez V.Balagura W.Baldinit J.Baptista Leite R.J.Barlow S.Barsuk W.Barter M.Bartolini F.Baryshnikov J.M.Basels G.Bassi B.Batsukh A.Battig A.Bay M.Becker F.Bedeschis I.Bediaga A.Beiter V.Belavin S.Belin V.Bellee K.Belous I.Belov I.Belyaev G.Bencivenni E.Ben-Haim A.Berezhnoy R.Bernet D.Berninghoff H.C.Bernstein C.Bertella E.Bertholet A.Bertolin C.Betancourt F.Betti M.O.Bettler Ia.Bezshyiko S.Bhasin J.Bhom L.Bian M.S.Bieker S.Bifani P.Billoir M.Birch F.C.R.Bishop A.Bizzeti M.Biorn M.P.Blago T.Blake F.Blanc S.Blusk D.Bobulska J.A.Boelhauve O.Boente Garcia T.Boettcher A.Boldyrev A.Bondar N.Bondar S.Borghi M.Borisyak M.Borsato J.T.Borsuk S.A.Bouchiba T.J.V.Bowcock A.Boyer C.Bozzi M.J.Bradley S.Braun A.Brea Rodriguezs M.Brodski J.Brodzicka A.Brossa Gonzalo D.Brundu A.Buonaura C.Burr A.Burschee A.Butkevich J.S.Butter J.Buytaert W.Byczynski S.Cadeddu H.Cai R.Calabrese L.Calefice L.Calero Diaz S.Cali R.Calladine M.Calvi M.Calvo Gomez P.Camargo Magalhaes A.Camboni P.Campana D.H.Campora Perez A.F.Campoverde Quezada S.Capelli L.Capriotti A.Carbonel G.Carboni R.Cardinale A.Cardini I.Carli P.Carniti L.Carus K.Carvalho Akiba A.Casais Vidal G.Casse M.Cattaneo G.Cavallero S.Celani J.Cerasoli A.J.Chadwick M.G.Chapman M.Charles Ph.Charpentier G.Chatzikonstantinidis C.A.Chavez Barajas M.Chefdeville C.Chen S.Chen A.Chernov S.-G.Chitic V.Chobanova S.Cholak M.Chrzaszcz A.Chubykin V.Chulikov P.Ciambrone M.F.Cicala X.Cid Vidal G.Ciezarek P.E.L.Clarke M.Clemencic H.V.Cliff J.Closier J.L.Cobbledick V.Coco J.A.B.Coelho J.Cogan E.Cogneras L.Cojocariu P.Collins T.Colombo L.Congedo A.Contu N.Cooke G.Coombs G.Corti C.M.Costa Sobral B.Couturier D.C.Craik J.Crkovska M.Cruz Torres R Currie C.L.Da Silva E.Dall'Occo J.Dalseno C.D'Ambrosio A.Danilina P.d'Argent A.Davis O.De Aguiar Francisco K.De Bruyn S.De Capua M.De Cian M.De Miranda L.De Paula M.De Seriolsd D.De Simone P.De Simone J.A.de Vries C.T.Dean W.Dean D.Decamp L.Del Buono B.Delaney H.-P.Dembinski A.Dendek V.Denvsenko D.Derkach O.Deschamps F.Desse F.Dettori B.Dey P.Di Nezza S.Didenkos L.Dieste Maronas H.Dikstra V.Dobishuk A.M.Donohoe F.Dordei A.C.dos Reis L.Douglas A.Dovbnva A.G.Downes K.Dreimanis M.W.Dudek L.Dufour V.Duk P.Durante J.M.Durham D.Dutta M.Dziewiecki A.Dziurda A.Dzyuba S.Easo U.Egede V.Egorychev S.Eidelman S.Eisenhardt S.Ek-In L.Eklund S.Ely A.Ene E.Epple S.Escher J.Eschle S.Esen T.Evans A.Falabella J.Fan Y.Fan B.Fang N.Farley S.Farry D.Fazzini P.Fedin M.Féo P.Fernandez Declara A.Fernandez Prieto J.M.Fernandez F.Ferrari L.Ferreira Lopes F.Ferreira Rodrigues S.Ferreres Sole M.Ferrillo M.Ferro-Luzzi S.Filippovo R.A.Fini M.Fiorini M.Firlej K.M.Fischer C.Fitzpatrick T.Fiutowski F.Fleure M.Fontana F.Fontanelli R.Fortv V.Franco Lima M.Franco Sevilla M.Frank E.Franzoso G.Frau C.Freit D.A.Friday J.Fu Q.Fuehring W.Funk E.Gabriel T.Gaintsevat A.Gallas Torreiras D.Galli S.Gambetta Y.Gan M.Gandelman P.Gandini Y.Gao M.Garau L.M.Garcia Martin P.Garcia Moreno J.Garcia Pardiñas B.Garcia Plana F.A.Garcia Rosales L.Garrido C.Gaspar R.E.Geertsema D.Gerick L.L.Gerken E.Gersabeck M.Gersabeck T.Gershon D.Gerstelo Ph.Ghez V.Gibson M.Giovannetti A.Gioventü P.Gironella Gironell L.Giubega C.Giugliano K.Gizdov E.L.Gkougkousis V.V.Gligorov C.Gobel E.Golobardes D.Golubkov A.Golutvin A.Giomes S.Gomez Fernandez F.Goncalves Abrantes M.Goncerz G.Gong P.Gorbounov L.V.Gorelov C.Gotti E.Govorkova J.P.Grabowski R.Graciani Diaz T.Grammatico L.A.Granado Cardoso E.Graugés E.Graverini G.Graziani A.Grecu L.M.Greeven P.Griffith L.Grillo S.Gromov B.R.Gruberg Cazon C.Gu M.Guarise P.A.Günther E.Gushchin A.Guth Y.Guz T.Gys T.Hadavizadeh G.Haefeli C.Haent J.Haimbereer S.C.Haines T.Halewood-leapas P.M.Hamiltons Q.Han X.Han T.H.Hancock S.Hansmann-Menzemer N.Harnew T.Harrison M.Hatch J.He M.Hecker K.Heithoff K.Heinicke A.M.Hennequin K.Hennessy L.Henry J.Heuel A.Hicheur D.Hif M.Hilton S.E.Hollit J.Hu J.Hu W.Hu W.Huang X.Huang W.Hulsbergen R.J.Hunter M.Hushchyn D.Hutchcroft D.Hynds P.Ibis M.Idzik D.llin P.Ilena A.Inglessi A.Ishteevso K.Ivshin R.Jacobsson S.Jakobsen E.Jans B.K.Jashal A.Jawahery V.Jevtic M.Jezabek F.Jiang M John D.Jobnson C.R.lones T.P.Jone в.Jost N.Jurik S.Kandvbeio Y.Kang M.Karacson M.Karpov N.Kazeev F.Keizer M.Kenzies T.Kete B.Khanji A.Kharisova S.Kholodenko K.E.Kim T.Kim V.S.Kirsebom O.Kitouni S.Klaver K.Klimaszewskis S.Koliev A.Kondybayeva A.Konoplyannikov P.Kopciewicz R.Kopecna P.Koppenburg M.Korolev I.Kostiuk O.Kot S.Kotriakhova P.Kravchenko L.Kravchuk R.D.Krawczyk M.Kreps F.Kresso S.Kretzschmar P.Krokovny W.Krupa W.Krzemiens W.Kucewicz M.Kucharczyk V.Kudryavtsev H.S.Kuindersma G.J.Kunde T.Kvaratskheliya D.Lacarrere G.Lafferty A.Lai A.Lampis D.Lancierini J.J.Lane R.Lane G.Lanfranchi C.Langenbruch J.Langer O.Lantwin T.Latham F.Lazzari R.Le Gac S.H.Lee R.Lefêvre A.Leflat S.Legotin O.Leroy T.Lesiak B.Leverington H.Li L.Li P.Li X.Li Y.Li Y.Li Z.Li X.Liane T.Lin R.Lindner V.Lisovskyi R.Litvinov G.Liu H.Liu S.Liu X.Liu A.Loi J.Lomba Castros I.Longstaff J.H.Lopes G.Loustau G.H.Lovell Y.Lu D.Lucchesi S.Luchukt M.Lucio Martinez V.Lukashenko Y.Luo A.Lupato E.Luppi O.Lupton A.Lusiani X.Lyu L.Ma S.Maccolini F.Machefert F.Maciuc V.Macko P.Mackowiak S.Madrll-Mander 0.Madejezyk L.R.Madhan Mohan O.Maev A.Maevskiy D.Maisuzenko M.W.Majewski S.Malde B.Maleckit A.Malinin T.Maltsev H.Malygina G.Manca G.Mancinelli R.Manera Escalero D.Manuzzi D.Marangotto J.Maratas J.F.Marchand U.Marconi S.Mariani C.Marin Benito M.Marinangeli P.Marino J.Marks P.J.Marshall G.Martellotti L.Martinazzoli M.Martineli D.Martinez Santos F.Martinez Vidalth A.Massafferri M.Materok R.Matev A.Mathad Z.Mathe V.Matiunin C.Matteuzzit K.R.Mattioli A.Mauri E.Maurice J.Mauricio M.Mazurek M.McCann L.Mcconnell T.H.Mcgrath A.McNab R.McNulty J.V.Mead B.Meadows C.Meaux G.Meier N.Meinert D.Melnychuk S.Meloni M.Merk A.Merli L.Meyer Garcia M.Mikhasenko D.A.Milanes E.Millard M.Milovanovic M.-N.Minard L.Minzoni S.E.Mitchell B.Mitreska D.S.Mitzel A.Modden R.A.Mohammed R.D.Moise T.Mombaicher I.A.Monroy S.Monteil M.Morandin G.Morello M.J.Morello J.Moron A.B.Morris A.G.Morris55 R.Mountain H.Mu F.Muheimi M.Mukherjee M.Mulder D.Miller K.Miller C.H.Murphy D.Murray P.Muzzetto P.Naik T.Nakada R.Nandakumar T.Nanut I.Nasteva M.Needham I.Neri N.Neri S.Neubert N.Neufeld R.Newcombe T.D.Nguyen C.Nguyen-Maut E.M.Niel S.Nieswand N.Nikitin N.S.Nolte C.Nunez A.Oblakowska-Mucha V.Obraztsov D.P.O'Hanlon R.Oldeman M.E.Olivares C.J.G.Onderwater A.Ossowska J.M.Otalora Goicochea T.Ovsiannikova P.Owen A.Oyanguren B.Pagare P.R.Pais T.Pajero A.Palano M.Palutan Y.Pan G.Panshin A.Papanestis M.Pappagallo L.L.Pappalardo C.Pappenheimer W.Parkers C.Parkes C.J.Parkinsont B.Passalacqua G.Passaleva A.Pastore M.Patel C.Patrignani C.J.Pawley A.Pearce A.Pellegrino M.Pepe Altarellit S.Perazini D.Pereima P.Perret K.Petridis A.Petrolini A.Petrov S.Petrucci M.Petruzzo T.T.H.Pham A.Philippov L.Pica M.Piccini B.Pietrzyk G.Pietrzyk M.Pilis D.Pinci F.Pisanit A.Piucci P.K Resmi V.Placinta J.Plews M.Plo Casasus F.Polei M.Poli Lener M.Poliakova A.Polucktov N.Polukhina I.Polyakov E.Polyearpo G.J.Pomery S.Poncet D.Popov S.Popov S.Poslaskii K.Prasanth L.Promberger C.Prouve V.Pugatch H.Pullen G.Punzi W.Qian J.Qin R.Quagliani B.Quintana N.V.Raab R.I.Rabadan Trejo B.Rachwal J.H.Rademacker M.Rama M.Ramos Pernas M.S.Rangel F.Ratnikov G.Raven M.Reboud F.Redit F.Reiss C.Remon Alepuz Z.Ren V.Renaudin R.Ribatti S.Ricciardi D.S.Richards K.Rinnert P.Robbe A.Robert G.Robertson A.B.Rodrigues E.Rodrigues J.A.Rodriguez A.Rollings P.Roloff V.Romanovskiy M.Romero Lamas A.Romero Vidal J.D.Roth M.Rotondo M.S.Rudolph T.Ruft J.Ruiz Vida A.Ryzhikov J.Ryzka J.J.Saborido Silva N.Sagidova N.Sahoo B.Saitta D.Sanchez Gonzalo C.Sanchez Gras R.Santacesaria C.Santamarina Rios M.Santimaria E.Santovetti D.Saranin G.Sarpis M.Sarpis A.Sarti C.Satriano A.Satta M.Saur D.Savrina H.Sazak L.G.Scantlebury Smead S.Schael M.Schellenberg M.Schiller H.Schindler M.Schmelling T.Schmelzer B.Schmidt O.Schneider A.Schopper M.Schubiger S.Schulte M.H.Schune R.Schwemmer B.Sciascia A.Sciubba S.Sellam A.Semennikov M.Senghi Soares A.Sergit N.Serra L.Sestini A.Seuthe P.Seyfert D.M.Shangase M.Shapkin I.Shchemerov L.Shchutska T.Shears L.Shekhtman Z.Shen V.Shevchenko E.B.Shields E.Shmanin J.D.Shupperd B.G.Siddi R.Silva Coutinho G.Simif S.Simone I.Skiba N.Skidmore T.Skwarnicki M.W.Slater J.C.Smallwood J.G.Smeaton A.Smetkina E.Smith M.Smith A.Snoch M.Soares L.Soares Lavra M.D.Sokoloff F.J.P.Soler A.Solovev I.Solovyev F.L.Souza De Almeida B.Souza De Paula B.Spaan E.Spadaro Norella P.Spradlin F.Stagnit M.Stahl S.Stahl P.Stefko O.Steinkamp S.Stemmle O.Stenyakin H.Stevens S.Stone M.E.Stramaglia M.Straticiuc D.Strekalina S.Strokov F.Suljik J.Sun L.Sun Y.Sun P.Svihra P.N.Swallow K.Swientek A.Szabelski T.Szumlak M.Szymanskil S.Taneja F.Teubert E.Thomas K.A.Thomson M.J.Tilley V.Tisserand S.T'Jampens M.Tobin S.Tolk L.Tomassetti D.Torres Machado D.Y.Tou M.Traill M.T.Tran E.Trifonova C.Trippl G.Tuci A.Tully N.Tuning A.Ukleja D.J.Unverzagt A.Usachov A.Ustyuzhanin U.Uwer A.Vagner V.Vagnoni A.Valassi G.Valenti N.Valls Canudas M.van Beuzekom M.Van Dijk H.Van Hecke E.van Herwijnen C.B.Van Hulse M.van Veghel R.V azquez Gomez P.Vazquez Regueiro C.Vázquez Sierra S.Vecchi J.J.Velthuis M.Veltri A.Venkateswaran M.Veronesi M.Vesterinen D.Vieira M.Vieites Diaz H.Viemann X.Vilasis-Cardona E.Vilella Figueras P.Vincent G.Vitali A.Vollhard D.Vom Bruch A.Vorobyev V.Vorobvev N.Voropaev R.Waldis J.Walsh C.Wang J.Wang J.Wang J.Wang M.Wang R.Wang Y.Wang Z.Wang H.M.Wark N.K.Watson S.G.Weber D.Websdale C.Weisser B.D.C.Westhenry D.J.White M.Whitehead D.Wiedner G.Wilkinson M.Wilkinson I.Williams M.Williams M.R.J.William F.F.Wilson W.Wislickis M.Witek L.Witola G.Wormser S.A.Wotton H.Wu K.Wyllie Z.Xiang D.Xiao Y.Xie A.Xu J.Xu L.Xu M.Xu Q.Xu Z.Xu Z.Xu D.Yang Y.Yang Z.Yang Z.Yang Y.Yao L.E.Yeomans H.Yin J.Yu X.Yuan O.Yushchenko E.Zaffaroni K.A.Zarebski M.Zavertyaev M.Zdybal O.Zenaiev M.Zeng D.Zhang L.Zhang S.Zhang Y.Zhang Y.Zhang A.Zhelezov y.zheng X.Zhou Y.Zhou X.Zhu V.Zhukov J.B.Zonneveld S.Zucchelli D.Zuliani G.Zunica 《Chinese Physics C》 SCIE CAS CSCD 2021年第4期47-60,共14页
A search for the rare decay B^(0)→J/ψФis performed using Pp collision data collected with the LHCb dete-ctor at centre-of-mass energies of 7,8 and 13 TeV,corresponding to an integrated luminosity of9 fb.No signific... A search for the rare decay B^(0)→J/ψФis performed using Pp collision data collected with the LHCb dete-ctor at centre-of-mass energies of 7,8 and 13 TeV,corresponding to an integrated luminosity of9 fb.No significant signal of the decay is observed and an upper limitof 1.1x 10^(-7)at 90%confidence level is set on the branching fraction. 展开更多
关键词 B physics flavour physics rare decay ω-Фmixing branching fraction
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Search for the doubly heavy baryons Ω^(0)_(bc) and E^(0)_(bc) decaying to Λ^(+)_(c)π^(-) and E^(+)_(c)π^(-)
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作者 R.Aaij C.Abelian Beteta +943 位作者 T.Ackernley B.Adeva M.Adinolfi H.Afshamia C.A.Aidala S.Aiola Z.Ajaltouni S.Aka J.Albrecht F.Alessio M.Alexander A.Alfonso Albero Z.Aliouche G.Alkhazov P.Alvarez Cartelie S.Amato Y.Amhis L.An L.Anderlini A.Andreianov M.Andreotti F.Archilli A.Artamonov M.Artuso K.Arzymatov E.Aslanides M.Atzeni B.Audurier S.Bachmann M.Bachmayer J.J.Back P.Baladron Rodriguez V.Balagura W.Baldini J.Baptista Leite R.J.Barlow S.Barsuk W.Barter M.Bartolini F.Baryshnikov J.M.Basels G.Bassi B.Batsukh A.Battig A.Bay M.Becker F.Bedeschi I.Bediaga A.Beiter V.Belavin S.Belin V.Bellee K.Belous I.Belov I.Belyaev G.Bencivenni E.Ben-Haim A.Berezhnoy R.Bernet D.Beminghoff H.C.Bernstein C.Bertella A.Bertolin C.Betancourt F.Betti Ia.Bezshyiko S.Bhasin J.Bhom L.Bian M.S.Bieker S.Bifani P.Billoir M.Birch F.C.R.Bishop A.Bitadze A.Bizzeti M.Bjorn M.P.Blago T.Blake F.Blanc S.Blusk D.Bobulska J.A.Boelhauve O.Boente Garcia T.Boettcher A.Boldyrev A.Bondar N.Bondar S.Borghi M.Borisyak M.Borsato J.T.Borsuk S.A.Bouchiba T.J.V.Bowcock A.Boyer C.Bozzi M J.Bradley S.Braun A.Brea Rodriguez M.Brodski J.Brodzicka A.Brossa Gonzalo D.Brundu A.Buonaura C.Burr A.Bursche A.Butkevich J.S.Butter J.Buytaert W.Byczynski S.Cadeddu H.Cai R.Calabrese L.Calefice L.Calero Diaz S.Cali R.Calladine M.Calvi M.Calvo Gomez P.Camargo Magalhaes A.Camboni P.Campana A.F.Campoverde Quezada S.Capelli L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini I.Carli P.Camiti L.Carus K.Carvalho Akiba A.Casais Vidal G.Casse M.Cattaneo G.Cavallero S.Celani J.Cerasoli A.J.Chadwick M.G.Chapman M.Charles Ph.Charpentier G.Chatzikonstantinidis C.A.Chavez Barajas M.Chefdeville C.Chen S.Chen A.Chernov V.Chobanova S.Cholak M.Chrzaszcz A.Chubykin V.Chulikov P.Ciambrone M.F.Cicala X.Cid Vidal G.Ciezarek P.E.L.Clarke M.Clemencic H.V.Cliff J.Closier J.L.Cobbledick V.Coco J.A.B.Coelho J.Cogan E.Cogneras L.Cojocariu P.Collins T.Colombo L.Congedo A.Contu N.Cooke G.Coombs G.Corti C.M.Costa Sobral B.Couturier D.C.Craik J.Crkovska M.Cruz Torres R.Currie C.L.Da Silva E.Dall'Occo J.Dalseno C.D'Ambrosio A.Danilina P.d'Argent A.Davis O.De Aguiar Francisco K.De Bruyn S.De Capua M.De Cian J.M.De Miranda L.De Paula M.De Serio D.De Simone P.De Simone J.A.de Vries C.T.Dean D.Decamp L.Del Buono B.Delaney H.-P.Dembinski A.Dendek V.Denysenko D.Derkach O.Deschamps F.Desse F.Dettori B.Dey P.Di Nezza S.Didenko L.Dieste Maronas H.Dijkstra V.Dobishuk A.M.Donohoe F.Dordei A.C.dos Reis L.Douglas A.Dovbnya A.G.Downes K.Dreimanis M.W.Dudek L.Dufour V.Duk P.Durante J.M.Durham D.Dutta A.Dziurda A.Dzyuba S.Easo U.Egede V.Egorychev S.Eidelman S.Eisenhardt S.Ek-In L.Eklund S.Ely A.Ene E.Epple S.Escher J.Eschle S.Esen T.Evans A.Falabella J.Fan Y.Fan B.Fang S.Farry D.Fazzini M.Feo A.Fernandez Prieto J.M.Femandez-tenllado Arribas F.Ferrari L.Ferreira Lopes F.Ferreira Rodrigues S.Ferreres Sole M.Ferrillo M.Ferro-Luzzi S.Filippov R.A.Fini M.Fiorini M.Firlej K.M.Fischer C.Fitzpatrick T.Fiutowski F.Fleuret M.Fontana F.Fontanelli R.Forty V.Franco Lima M.Franco Sevilla M.Frank E.Franzoso G.Frau C.Frei D.A.Friday J.Fu Q.Fuehring W.Funk E.Gabriel T.Gaintseva A.Gallas Torreira D.Galli S.Gambetta Y.Gan M.Gandelman P.Gandini Y.Gao M.Garau L.M.Garcia Martin P.Garcia Moreno J.Garcia Pardinas B.Garcia Plana F.A.Garcia Rosales L.Garrido C.Gaspar R.E.Geertsema D.Gerick L.L.Gerken E.Gersabeck M.Gersabeck T.Gershon D.Gerstel Ph.Ghez V.Gibson H.K.Giemza M.Giovannetti A.Gioventu P Gironella Gironell L.Giubega C.Giugliano K.Gizdov E.L.Gkougkousis V.V.Gligorov C.Gobel E.Golobardes D.Golubkov A.Golutvin A.Gomes S.Gomez Fernandez F.Goncalves Abrantes M.Goncerz G.Gong P.Gorbounov I.V.Gorelov C.Gotti E.Govorkova J.P.Grabowski T.Grammatico L.A.Granado Cardoso E.Grauges E.Graverini G.Graziani A.Grecu L.M.Greeven P.Griffith L.Grillo S.Gromov B.R.Gruberg Cazon C.Gu M.Guarise P.A.Giinther E.Gushchin A.Guth Y.Guz T.Gys T.Hadavizadeh G.Haefeli C.Haen J.Haimberger T.Halewood-leagas P.M.Hamilton Q.Han X.Han T.H.Hancock S.Hansmann-Menzemer N.Hamew T.Harrison C.Hasse M.Hatch J.He M.Hecker K.Heijhoff K.Heinicke A.M.Hennequin K.Hennessy L.Henry J.Heuel A.Hicheur D.Hill M.Hilton S.E.Hollitt J.Hu W.Hu W.Huang X.Huang W.Hulsbergen R.J.Hunter M.Hushchyn D.Hutchcroft D.Hynds P.Ibis M.Idzik D.Ilin P.Ilten A.Inglessi A.Ishteev K.Ivshin R.Jacobsson S.Jakobsen E.Jans B.K.Jashal A.Jawahery V.Jevtic M.Jezabek F.Jiang M.John D.Johnson C.R.Jones T.P.Jones B.Jost N.Jurik S.Kandybei Y.Kang M.Karacson M.Karpov F.Keizer M.Kenzie T.Ketel B.Khanji A.Kharisova S.Kholodenko T.Kirn V.S.Kirsebom O.Kitouni S.Klaver K.Klimaszewski S.Koliiev A.Kondybayeva A.Konoplyannikov P.Kopciewicz R.Kopecna P.Koppenburg M.Korolev I.Kostiuk O.Kot S.Kotriakhova P.Kravchenko L.Kravchuk R.D.Krawczyk M.Kreps F.Kress S.Kretzschmar P.Krokovny W.Krupa W.Krzemien W.Kucewicz M.Kucharczyk V.Kudryavtsev H.S.Kuindersma T.Kvaratskheliya D.Lacarrere G.Lafferty A.Lai A.Lampis D.Lancierini J.J.Lane R.Lane G.Lanfranchi C.Langenbruch J.Langer O.Lantwin T.Latham F.Lazzari R.Le Gac S.H.Lee R.Lefevre A.Leflat S.Legotin O.Leroy T.Lesiak B.Leverington H.Li L.Li P.Li S.Li Y.Li Z.Li X.Liang T.Lin R.Lindner V.Lisovskyi R.Litvinov G.Liu H.Liu S.Liu X.Liu A.Loi J.Lomba Castro I.Longstaff J.H.Lopes G.H.Lovell Y.Lu D.Lucchesi S.Luchuk M.Lucio Martinez V.Lukashenko Y.Luo A.Lupato E.Luppi O.Lupton A.Lusiani X.Lyu L.Ma R.Ma S.Maccolini F.Machefert F.Maciuc V.Macko P.Mackowiak S.Maddrell-Mander O.Madejczyk L.R.Madhan Mohan O.Maev A.Maevskiy D.Maisuzenko M.W.Majewski J.J.Malczewski S.Malde B.Malecki A.Malinin T.Maltsev H.Malygina G.Manca G.Mancinelli D.Manuzzi D.Marangotto J.Maratas J.F.Marchand U.Marconi S.Mariani C.Marin Benito M.Marinangeli P.Marino J.Marks A.M.Marsha P.J.Marshall G.Martellotti L.Martinazzoli M.Martinelli D.Martinez Santos F.Martinez Vidal A.Massafferri M.Materok R.Matev A.Mathad Z.Mathe V.Matiunin G.J.Kunde C.Matteuzzi K.R.Mattioli A.Mauri E.Maurice J.Mauricio M.Mazurek M.McCann L.Mcconnell T.H.Mcgrath A.McNab R.McNulty J.V.Mead B.Meadows C.Meaux G.Meier N.Meinert D.Melnychuk S.Meloni M.Merk A.Merli L.Meyer Garcia M.Mikhasenko D.A.Milanes E.Millard M.Milovanovic M.-N.Minard A.Minotti L.Minzoni S.E.Mitchell B.Mitreska D.S.Mitzel A.Modden R.A.Mohammed R.D.Moise T.Mombacher I.A.Monroy S.Monteil M.Morandin G.Morello M.J.Morello J.Moron A.B.Morris A.G.Morris R.Mountain H.Mu F.Muheim M.Mukherjee M.Mulder D.Muller K.Muller C.H.Murphy D.Murray P.Muzzetto P.Naik T.Nakada R.Nandakumar T.Nanut I.Nasteva M.Needham I.Neri N.Neri S.Neubert N.Neufeld R.Newcombe T.D.Nguyen C.Nguyen-Mau E.M.Niel S.Nieswand N.Nikitin N.S.Nolte C.Nunez A.Oblakowska-Mucha V.Obraztsov D.P.O'Hanlon R.Oldeman M.E.Olivares C.J.G.Onderwater A.Ossowska J.M.Otalora Goicochea T.Ovsiannikova P.Owen A.Oyanguren B.Pagare P.R.Pais T.Pajero A.Palano M.Palutan Y.Pan G.Panshin A.Papanestis M.Pappagallo L.L.Pappalardo C.Pappenheimer W.Parker C.Parkes C.J.Parkinson B.Passalacqua G.Passaleva A.Pastore M.Patel C.Patrignani C.J.Pawley A.Pearce A.Pellegrino M.Pepe Altarelli S.Perazzini D.Pereima P.Perret M.Petrie K.Petridis A.Petrolini A.Petrov S.Petrucci M.Petruzzo T.T.H.Pham A.Philippov L.Pica M.Piccini B.Pietrzyk G.Pietrzyk M.Pili D.Pinci F.Pisani P.K Resmi V.Placinta J.Plews M.Pio Casasus F.Polci M.Poli Lener M.Poliakova A.Poluektov N.Polukhina I.Polyakov E.Polycarpo G.J.Pomery S.Ponce D.Popov S.Popov S.Poslavskii K.Prasanth L.Promberger C.Prouve V.Pugatch H.Pullen G.Punzi W.Qian J.Qin R.Quagliani B.Quintana N.V.Raab R.I.Rabadan Trejo B.Rachwal J.H.Rademacker M.Rama M.Ramos Pernas M.S.Rangel F.Ratnikov G.Raven M.Reboud F.Redi F.Reiss C.Remon Alepuz Z.Ren V.Renaudin R.Ribatti S.Ricciardi K.Rinnert P.Robbe A.Robert G.Robertson A.B.Rodrigues E.Rodrigues J.A.Rodriguez Lopez A.Rollings P.Roloff V.Romanovskiy M.Romero Lamas A.Romero Vidal J.D.Roth M.Rotondo M.S.Rudolph T.Ruf J.Ruiz Vidal A.Ryzhikov J.Ryzka J.J.Saborido Silva N.Sagidova N.Sahoo B.Saitta D.Sanchez Gonzalo C.Sanchez Gras R.Santacesaria C.Santamarina Rios M.Santimaria E.Santovetti D.Saranin G.Sarpis M.Sarpis A.Sarti C.Satriano M.Saur D.Savrina H.Sazak L.G.Scantlebury Smead S.Schael M.Schellenberg M.Schiller H.Schindler M.Schmelling B.Schmidt O.Schneider A.Schopper M.Schubiger S.Schulte M.H.Schune R.Schwemmer B.Sciascia S.Sellam A.Semennikov M.Senghi Soares A.Sergi N.Serra L.Sestini A.Seuthe P.Seyfert Y.Shang D.M.Shangase M.Shapkin I.Shchemerov L.Shchutska T.Shears L.Shekhtman Z.Shen V.Shevchenko E.B.Shields E.Shmanin J.D.Shupperd B.G.Siddi R.Silva Coutinho G.Simi S.Simone N.Skidmore T.Skwarnicki M.W.Slater I.Slazyk J.C.Smallwood J.G.Smeaton A.Smetkina E.Smith M.Smith A.Snoch M.Soares L.Soares Lavra M.D.Sokoloff F.J.P.Soler A.Solovev I.Solovyev F.L.Souza De Almeida B.Souza De Paula B.Spaan E.Spadaro Norella P.Spradlin F.Stagni M.Stahl S.Stahl P.Stefko O.Steinkamp O.Stenyakin H.Stevens S.Stone M.E.Stramaglia M.Straticiuc D.Strekalina F.Suljik J.Sun L.Sun Y.Sun P.Svihra P.N.Swallow K.Swientek A.Szabelski T.Szumlak M.Szymanski S.Taneja F.Teubert E.Thomas K.A.Thomson V.Tisserand S.T'Jampens M.Tobin L.Tomassetti D.Torres Machado D.Y.Tou M.T.Tran E.Trifonova C.Trippl G.Tuci A.Tully N.Tuning A.Ukleja D.J.Unverzagt E.Ursov A.Usachov A.Ustyuzhanin U.Uwer A.Vagner V.Vagnoni A.Valassi G.Valenti N.Valls Canudas M.van Beuzekom M.Van Dijk E.van Herwijnen C.B.Van Hulse M.van Veghel R.Vazquez Gomez P.Vazquez Regueiro C.Vazquez Sierra S.Vecchi J.J.Velthuis M.Veltri A.Venkateswaran M.Veronesi M.Vesterinen D.Vieira M.Vieites Diaz H.Viemann X.Vilasis-Cardona E.Vilella Figueras P.Vincent G.Vitali D.Vom Bruch A.Vorobyev V.Vorobyev N.Voropaev R.Waldi J.Walsh C.Wang J.Wang M.Wang R.Wang Y.Wang Z.Wang H.M.Wark N.K.Watson S.G.Weber D.Websdale C.Weisser B.D.C.Westhenry D.J.White M.Whitehead D.Wiedner G.Wilkinson M.Wilkinson I.Williams M.Williams M.R.J.Williams F.F.Wilson W.Wislicki M.Witek L.Witola G.Wormser S.A.Wotton H.Wu K.Wyllie Z.Xiang D.Xiao Y.Xie A.Xu J.Xu L.Xu M.Xu Q.Xu Z.Xu D.Yang S.Yang Y.Yang Z.Yang Y.Yao L.E.Yeomans H.Yin J.Yu X.Yuan O.Yushchenko E.Zaffaroni M.Zavertyaev M.Zdybal O.Zenaiev M.Zeng D.Zhang L.Zhang S.Zhang Y.Zhang A.Zhelezov y.zheng X.Zhou Y.Zhou X.Zhu V.Zhukov J.B.Zonneveld Q.Zou S.Zucchelli D.Zuliani G.Zunica 《Chinese Physics C》 SCIE CAS CSCD 2021年第9期10-21,共12页
The first search for the doubly heavyΩ^(0)_(bc)baryon and a search for the E^(0)_(bc)baryon are performed using pp collision data collected via the LHCb experiment from 2016 to 2018 at a centre-of-mass energy of 13 T... The first search for the doubly heavyΩ^(0)_(bc)baryon and a search for the E^(0)_(bc)baryon are performed using pp collision data collected via the LHCb experiment from 2016 to 2018 at a centre-of-mass energy of 13 TeV,corresponding to an integrated luminosity of 5.2 fb^(-1).The baryons are reconstructed via their decays to Λ^(+)_(c)π^(-)and E^(+)_(c)π^(-).No significant excess is fbund for invariant masses between 6700 and 7300 MeV/c^(2),in a rapidity range from 2.0 to 4.5 and a transverse momentum range from 2 to 20 MeV/c.Upper limits are set on the ratio of the Ω^(0)_(bc)and E^(0)_(bc)production cross-section times the branching fraction to Λ^(+)_(c)π^(-)(E^(+)_(c)π^(-))relative to that of the Λ^(0)_(b)(E^(0)_(b))baryon,for different lifetime hypotheses,at 95%confidence level.The upper limits range from 0.5 x 10^(-4)to 2.5 x 10^(-4)for theΩ^(0)_(bc)→Λ^(+)_(c)π^(-)(E^(0)_(bc)→Λ^(+)_(c)π^(-))decay,and from 1.4x 10^(-3)to 6.9 x 10^(-3)for theΩ^(0)_(bc)→E^(+)_(c)π^(-)(E^(0)_(bc)→E^(+)_(c)π^(-))decay,depending on the considered mass and lifetime of theΩ^(0)_(bc)(E^(0)_(bc))baryon. 展开更多
关键词 B physics QUARKONIUM SPECTROSCOPY heavy quark production
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A dynamic range extension system for LHAASOWCDA-1
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作者 F.Aharonian Q.An +257 位作者 Axikegu L.X.Bai Y.X.Bai Y.W.Bao D.Bastieri X.J.Bi Y.J.Bi H.Cai J.T.Cai Z.Cao Z.Cao J.Chang J.F.Chang X.C.Chang B.M.Chen J.Chen L.Chen L.Chen L.Chen M.J.Chen M.L.Chen Q.H.Chen S.H.Chen S.Z.Chen T.L.Chen X.L.Chen Y.Chen N.Cheng Y.D.Cheng S.W.Cui X.H.Cui Y.D.Cui B.Z.Dai H.L.Dai Z.G.Dai Danzengluobu D.della Volpe B.D’Ettorre Piazzoli X.J.Dong J.H.Fan Y.Z.Fan Z.X.Fan J.Fang K.Fang C.F.Feng L.Feng S.H.Feng Y.L.Feng B.Gao C.D.Gao Q.Gao W.Gao M.M.Ge L.S.Geng G.H.Gong Q.B.Gou M.H.Gu J.G.Guo X.L.Guo Y.Q.Guo Y.Y.Guo Y.A.Han H.H.He H.N.He J.C.He S.L.He X.B.He Y.He M.Heller Y.K.Hor C.Hou X.Hou H.B.Hu S.Hu S.C.Hu X.J.Hu D.H.Huang Q.L.Huang W.H.Huang X.T.Huang Y.Huang Z.C.Huang F.Ji X.L.Ji H.Y.Jia K.Jiang Z.J.Jiang C.Jin D.Kuleshov K.Levochkin B.B.Li C.Li C.Li F.Li H.B.Li H.C.Li H.Y.Li J.Li K.Li W.L.Li X.Li X.Li X.R.Li Y.Li Y.Z.Li Z.Li Z.Li E.W.Liang Y.F.Liang S.J.Lin B.Liu C.Liu D.Liu H.Liu H.D.Liu J.Liu J.L.Liu J.S.Liu J.Y.Liu M.Y.Liu R.Y.Liu S.M.Liu W.Liu Y.N.Liu Z.X.Liu W.J.Long R.Lu H.K.Lv B.Q.Ma L.L.Ma X.H.Ma J.R.Mao A.Masood W.Mitthumsiri T.Montaruli Y.C.Nan B.Y.Pang P.Pattarakijwanich Z.Y.Pei M.Y.Qi D.Ruffolo V.Rulev A.Sáiz L.Shao O.Shchegolev X.D.Sheng J.R.Shi H.C.Song Yu.V.Stenkin V.Stepanov Q.N.Sun X.N.Sun Z.B.Sun P.H.T.Tam Z.B.Tang W.W.Tian B.D.Wang C.Wang H.Wang H.G.Wang J.C.Wang J.S.Wang L.P.Wang L.Y.Wang R.N.Wang W.Wang W.Wang X.G.Wang X.J.Wang X.Y.Wang Y.D.Wang Y.J.Wang Y.P.Wang Z.Wang Z.Wang Z.H.Wang Z.X.Wang D.M.Wei J.J.Wei Y.J.Wei T.Wen C.Y.Wu H.R.Wu S.Wu W.X.Wu X.F.Wu S.Q.Xi J.Xia J.J.Xia G.M.Xiang G.Xiao H.B.Xiao G.G.Xin Y.L.Xin Y.Xing D.L.Xu R.X.Xu L.Xue D.H.Yan C.W.Yang F.F.Yang J.Y.Yang L.L.Yang M.J.Yang R.Z.Yang S.B.Yang Y.H.Yao Z.G.Yao Y.M.Ye L.Q.Yin N.Yin X.H.You Z.Y.You Y.H.Yu Q.Yuan H.D.Zeng T.X.Zeng W.Zeng Z.K.Zeng M.Zha X.X.Zhai B.B.Zhang H.M.Zhang H.Y.Zhang J.L.Zhang J.W.Zhang L.Zhang L.Zhang L.X.Zhang P.F.Zhang P.P.Zhang R.Zhang S.R.Zhang S.S.Zhang X.Zhang X.P.Zhang Y.Zhang Y.Zhang Y.F.Zhang Y.L.Zhang B.Zhao J.Zhao L.Zhao L.Z.Zhao S.P.Zhao F.Zheng y.zheng B.Zhou H.Zhou J.N.Zhou P.Zhou R.Zhou X.X.Zhou C.G.Zhu F.R.Zhu H.Zhu K.J.Zhu X.Zuo 《Radiation Detection Technology and Methods》 CSCD 2021年第4期520-530,共11页
Purpose The main scientific goal of LHAASO-WCDA is to survey gamma-ray sources with energy from 100 GeV to 30 TeV.To observe high-energy shower events,especially to measure the energy spectrum of cosmic rays from 100 ... Purpose The main scientific goal of LHAASO-WCDA is to survey gamma-ray sources with energy from 100 GeV to 30 TeV.To observe high-energy shower events,especially to measure the energy spectrum of cosmic rays from 100 TeV to 10 PeV,a dynamic range extension system(WCDA++)is designed to use a 1.5-inch PMT with a dynamic range of four orders of magnitude for each cell in WCDA-1.Method The dynamic range is extended by using these PMTs to measure the effective charge density in the core region of air shower events,which is an important parameter for identifying the composition of primary particles.Result and Conclusion The system has been running for more than one year.In this paper,the details of the design and performance of WCDA++are presented. 展开更多
关键词 LHAASO-WCDA WCDA++ Water Cherenkov detector PERFORMANCE
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Prospects for a multi-TeV gamma-ray sky survey with the LHAASO water Cherenkov detector array
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作者 F.Aharonian V.Alekseenko +212 位作者 Q.An Axikegu L.X.Bai Y.W.Bao D.Bastieri9 X.J.Bi H.Cai Zhe Cao Zhen Cao J.Chang J.F.Chang X.C.Chang S.P.Chao B.M.Chen J.Chen L.Chen L.Chen M.L.Chen M.J.Chen Q.H.Chen S.H.Chen S.Z.Chen T.L.Chen X.L.Chen Y.Chen N.Cheng Y.D.Cheng S.W.Cui X.H.Cui Y.D.Cui B.Z.Dai H.L.Dai Z.G.Dai Danzengluobu B.D'Ettorre Piazzoli J.Fang J.H.Fan Y.Z.Fan C.F Feng L.Feng S.H.Feng Y.L.Feng B.Gao Q.Gao W.Gao M.M.Ge L.S.Geng G.H.Gong Q.B.Gou M.H.Gu Y.Q.Guo Y.Y.Guo Y.A.Han H.H.He J.C.He M.Heller S.L.He Y.He C.Hou D.H.Huang Q.L.Huang W.H.Huang X.T.Huang H.B.Hu S.Hu H.Y.Jia K.Jiang F.Ji C.Jin X.L.Ji K.Levochkin E.W.Liang Y.F Liang Cheng Li Cong Li F.Li H.Li H.B.Li H.C.Li H.M.Li J.Li K.Li W.L.Li X.Li X.R.Li Y.Li Z.Li Z.Li B.Liu C.Liu D.Liu H.D.Liu H.Liu J.Liu J.Y.Liu M.Y.Liu R.Y.Liu S.M.Liu W.Liu Y.N.Liu Z.X.Liu W.J.Long R.Lu H.K.Lv B.Q.Ma L.L.Ma J.R.Mao A.Masood X.H.Ma W.Mitthumsiri T.Montaruli Y.C.Nan P.Pattarakijwanich Z.Y.Pei B.Q.Qiao M.Y.Qi D.Ruffolo V.Rulev A.Sáiz L.Shao O.Shchegolev X.D.Sheng J.R.Shi Y.Stenkin V.Stepanov Z.B.Sun P.H.T.Tam Z.B.Tang W.W.Tian D.D.Volpe C.Wang H.Wang H.G.Wang J.C.Wang L.Y.Wang W.Wang W.Wang X.G.Wang X.Y.Wang X.J.Wang Y.D.Wang Y.J.Wang Y.N.Wang Y.P.Wang Z.Wang Z.H.Wang Z.X.Wang D.M.Wei J.J.Wei T.Wen C.Y.Wu H.R.Wu S.Wu W.X.Wu X.F.Wu G.M.Xiang G.Xiao G.G.Xin Y.Xing R.X.Xu L.Xue D.H.Yan C.W.Yang F.F.Yang L.L.Yang M.J.Yang R.Z.Yang S.B.Yang Y.H.Yao Z.G.Yao Y.M.Ye L.Q.Yin N.Yin X.H.You Z.Y.You Q.Yuan Y.H.Yu Z.J.Jiang H.D.Zeng T.X.Zeng W.Zeng Z.K.Zeng M.Zha B.B.Zhang H.M.Zhang H.Y.Zhang J.L.Zhang J.W.Zhang L.Zhang P.F.Zhang P.P.Zhang S.R.Zhang S.S.Zhang X.Zhang X.P.Zhang Yi Zhang Yong Zhang Y.F.g Zhang B.Zhao J.Zhao L.Zhao L.Z.Zhao F.Zheng y.zheng J.N.Zhou P.Zhou R.Zhou X.X.Zhou C.G.Zhu F.R.Zhu H.Zhu K.J.Zhu X.Zuo 《Chinese Physics C》 SCIE CAS CSCD 2020年第6期123-132,共10页
The Water Cherenkov Detector Array(WCDA) is a major component of the Large High Altitude Air Shower Array Observatory(LHAASO), a new generation cosmic-ray experiment with unprecedented sensitivity, currently under con... The Water Cherenkov Detector Array(WCDA) is a major component of the Large High Altitude Air Shower Array Observatory(LHAASO), a new generation cosmic-ray experiment with unprecedented sensitivity, currently under construction. WCDA is aimed at the study of TeV γ-rays. In order to evaluate the prospects of searching for TeV γ-ray sources with WCDA, we present a projection of the one-year sensitivity of WCDA to TeV γ-ray sources from TeVCat using an all-sky approach. Out of 128 TeVCat sources observable by WCDA up to a zenith angle of 45°, we estimate that 42 would be detectable in one year of observations at a median energy of 1 TeV. Most of them are Galactic sources, and the extragalactic sources are Active Galactic Nuclei(AGN). 展开更多
关键词 TeVγ-ray astronomy observational prospect LHAASO-WCDA
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Line-of-shower trigger method to lower energy threshold for GRB detection using LHAASO-WCDA
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作者 F.Aharonian Q.An +257 位作者 Axikegu L.X.Bai Y.X.Bai Y.W.Bao D.Bastieri X.J.Bi Y.J.Bi H.Cai J.T.Cai Z.Cao Z.Cao J.Chang J.F.Chang X.C.Chan B.M.Chen J.Chen L.Chen L.Chen L.Chen M.J.Chen M.L.Chen Q.H.Chen S.H.Chen S.Z.Chen T.L.Chen X.L.Chen Y.Chen N.Chen Y.D.Chen S.W.Cui X.H.Cui Y.D.Cui B.Z.Dai H.L.Dai Z.G.Dai Danzengluobu D.della Volpe B.D’Ettorre Piazzoli X.J.Don J.H.Fan Y.Z.Fan Z.X.Fan J.Fang K.Fan C.F.Feng L.Feng S.H.Fen Y.L.Feng B.Gao C.D.Gao Q.Gao W.Gao M.M.Ge L.S.Gen G.H.Gong Q.B.Gou M.H.Gu J.G.Guo X.L.Guo Y.Q.Guo Y.Y.Guo Y.A.Han H.H.He H.N.He J.C.He S.L.He X.B.He Y.He M.Heller Y.K.Hor C.Hou X.Hou H.B.Hu S.Hu S.C.Hu X.J.Hu D.H.Huang Q.L.Huan W.H.Huang X.T.Huang Z.C.Huang F.Ji X.L.Ji H.Y.Jia K.Jiang Z.J.Jiang C.Jin D.Kuleshov K.Levochkin B.B.Li C.Li C.Li F.Li H.B.Li H.C.Li H.Y.Li J.Li K.Li W.L.Li X.Li X.Li X.R.Li Y.Li Y.Z.Li Z.Li Z.Li E.W.Liang Y.F.Liang S.J.Lin B.Liu C.Liu D.Liu H.Liu H.D.Liu J.Liu J.L.Liu J.S.Liu J.Y.Liu M.Y.Liu R.Y.Liu S.M.Liu W.Liu Y.N.Liu Z.X.Liu W.J.Long R.Lu H.K.Lv B.Q.Ma L.L.Ma X.H.Ma J.R.Mao A.Masood W.Mitthumsiri T.Montaruli Y.C.Nan B.Y.Pang P.Pattarakijwanich Z.Y.Pei M.Y.Qi D.Ruffolo V.Rulev A.Sáiz L.Shao O.Shchegolev X.D.Shen J.R.Shi H.C.Song Yu.V.Stenkin V.Stepanov Q.N.Sun X.N.Sun Z.B.Sun P.H.T.Tam Z.B.Tang W.W.Tian B.D.Wan C.Wang H.Wang H.G.Wang J.C.Wang J.S.Wang L.P.Wang L.Y.Wan R.N.Wang W.Wang W.Wang X.G.Wang X.J.Wan X.Y.Wang Y.D.Wan Y.J.Wan Y.P.Wang Z.Wang Z.Wang Z.H.Wang Z.X.Wang D.M.Wei J.J.Wei Y.J.Wei T.Wen C.Y.Wu H.R.Wu S.Wu W.X.Wu X.F.Wu S.Q.Xi J.Xia J.J.Xia G.M.Xiang G.Xiao H.B.Xiao G.G.Xin Y.L.Xin Y.Xing D.L.Xu R.X.Xu L.Xue D.H.Yan C.W.Yang F.F.Yang J.Y.Yang L.L.Yang M.J.Yan R.Z.Yang S.B.Yang Y.H.Yao Z.G.Yao Y.M.Ye L.Q.Yin N.Yin X.H.You Z.Y.You Y.H.Yu Q.Yuan H.D.Zeng T.X.Zeng W.Zeng Z.K.Zeng M.Zha X.X.Zhai B.B.Zhang H.M.Zhang H.Y.Zhang J.L.Zhang J.W.Zhang L.Zhang L.Zhang L.X.Zhang P.F.Zhang P.P.Zhang R.Zhang S.R.Zhang S.S.Zhan X.Zhang X.P.Zhan Y.Zhan Y.Zhang Y.F.Zhang Y.L.Zhan B.Zhao J.Zhao L.Zhao L.Z.Zhao S.P.Zhao F.Zheng y.zheng B.Zhou H.Zhou J.N.Zhou P.Zhou R.Zhou X.X.Zhou C.G.Zhu F.R.Zhu H.Zhu K.J.Zhu X.Zuo The LHAASO Collaboration 《Radiation Detection Technology and Methods》 CSCD 2021年第4期531-541,共11页
Purpose Observation of high energy and very high emission from Gamma Ray Bursts(GRBs)is crucial to study the gigantic explosion and the underline processes.With a large field-of-view and almost full duty cycle,the Wat... Purpose Observation of high energy and very high emission from Gamma Ray Bursts(GRBs)is crucial to study the gigantic explosion and the underline processes.With a large field-of-view and almost full duty cycle,the Water Cherenkov Detector Array(WCDA),a sub-array of the Large High Altitude Air Shower Observatory(LHAASO),is appropriate to monitor the very high energy emission from unpredictable transients such as GRBs.Method Nevertheless,the main issue for an extensive air shower array is the high energy threshold which limits the horizon of the detector.To address this issue a new trigger method is developed in this article to lower the energy threshold of WCDA for GRB observation.Result The proposed method significantly improves the detection efficiency of WCDA for gamma-rays around the GRB direction at 10-300 GeV.The sensitivity of the WCDA for GRB detection with the new trigger method is estimated.The achieved sensitivity of the quarter WCDA array above 10 GeV is comparable with that of Fermi-LAT.The data analysis process and corresponding fluence upper limit for GRB 190719C is presented as an example. 展开更多
关键词 LHAASO WCDA GRB
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