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Radiative Decays of (0^+,1^+) Strange-Bottom Mesons 被引量:2
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作者 WANG Zhi-Gang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第7期91-98,共8页
In this article, we assume that the (0^+,1^+) strange-bottom mesons are the conventional bs mesons, and calculate the electromagnetic coupling constants d, g1, g2, and g3 using the light-cone QGD sum rules. Then w... In this article, we assume that the (0^+,1^+) strange-bottom mesons are the conventional bs mesons, and calculate the electromagnetic coupling constants d, g1, g2, and g3 using the light-cone QGD sum rules. Then we study the radiative decays Bs0→Bs^*γ, Bs1→Bsγ, Bs1→Bs^*γ, and Bs1→Bs0γ, and observe that the widths are rather narrow. We can search for the (0^+, 1^+) strange-bottom mesons in the invariant Bsπ^0 and Bs^*π^0 mass distributions in the strong decays or in the invariant Bs^*γ, and Bsγ mass distributions in the radiative decays. 展开更多
关键词 strange-bottom mesons light-cone QCD sum rules
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The Structure Functions in the Weak and Semileptonic Decay of Meson B to the Mesons D and D*: A Computational Study 被引量:1
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作者 Alireza Heidari Mohammadali Ghorbani 《Journal of Modern Physics》 2012年第2期208-213,共6页
The following article has been retracted due to the investigation of complaints received against it. Mr. Mohammadali Ghorbani (corresponding author and also the last author) cheated the author’s name: Alireza Heidari... The following article has been retracted due to the investigation of complaints received against it. Mr. Mohammadali Ghorbani (corresponding author and also the last author) cheated the author’s name: Alireza Heidari. The scientific community takes a very strong view on this matter and we treat all unethical behavior such as plagiarism seriously. This paper published in Vol.3 No.2, 208-213, 2012, has been removed from this site. 展开更多
关键词 Bethe-Salpeter Equation Heavy-mesons DECAY Weak DECAY Quark MESON SEMILEPTONIC DECAY HADRON HADRONIC Decays
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Chiral Lagrangian Treatment of 0^++ Mesons and 0^++ Glueballs
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作者 夏政通 王顺金 《Chinese Physics Letters》 SCIE CAS CSCD 2007年第3期648-651,共4页
Within the framework of a nonlinear chiral Lagrangian the mass spectra and the decay properties of 0^++ states below 2 GeV are studied. Assuming that f0(980), a0(980), K0(1430), and f0(1500) comprise an SU(... Within the framework of a nonlinear chiral Lagrangian the mass spectra and the decay properties of 0^++ states below 2 GeV are studied. Assuming that f0(980), a0(980), K0(1430), and f0(1500) comprise an SU(3) nonet, we make a detailed prediction about the static properties of the 0^++ mesons. The substructure analysis of these states in terms of two- and four-quark components as well as a glueball component is carried out. We also consider the interaction Lagrangian and provide a preliminary study of the strong and radiative decays of the 0++ mesons. The scalar glueball masses and partial widths are also presented. In view of the fact that few data of 0++ mesons are clearly given in the present PDG (Particle Data Group) list and that the four-quark content of mesons is a hot issue both experimentally and theoretically, the predicted results of the paper may be helpful for upcoming experimental and theoretical studies of these mesons. 展开更多
关键词 SCALAR mesons PP INTERACTIONS 450 GEV/C DECAYS MASS
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Anisotropic emission of charged mesons and structure characteristic of emission source in heavy ion collisions at 1-2A GeV
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作者 刘福虎 《Chinese Physics B》 SCIE EI CAS CSCD 2008年第3期883-895,共13页
Angular distributions of pious and kaons produced in heavy ion collisions at the low-energy end of high energies (1-2 A GeV) have been investigated by using a multisource ideal gas model. The model covers the expans... Angular distributions of pious and kaons produced in heavy ion collisions at the low-energy end of high energies (1-2 A GeV) have been investigated by using a multisource ideal gas model. The model covers the expansions and movements of the emission sources, and it is related to the collective flows. By using the analytic expression and the Monte Carlo method, the azimuthal and polar angle distributions of mesons are calculated by the model and compared with the experimental data of the KaoS Collaboration. 展开更多
关键词 low-energy end of high energies heavy ion collisions charged mesons anisotropic emission
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Semileptonic Decays of B_s^(**) Mesons into D_(s1) and D_(s2)~* in HQET
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作者 GAN Long-Fei HUANG Ming-Qiu 《Communications in Theoretical Physics》 SCIE CAS CSCD 2012年第1期85-92,共8页
In the framework of the heavy quark effective theory, the leading order Isgur-Wise functions relevant to semileptonie decays of the orbitally P-wave excited Bs meson states Bs*, including the newly found narrow Bs1 ... In the framework of the heavy quark effective theory, the leading order Isgur-Wise functions relevant to semileptonie decays of the orbitally P-wave excited Bs meson states Bs*, including the newly found narrow Bs1 (5830) andBs2(5840) states, into the (Ds1(2536), Ds2(2573)) doublet are calculated from QCD sum rules. With these universal form factors, the decay rates and branching ratios are also estimated. 展开更多
关键词 heavy quark effective theory semileptonic decays QCD sum rules Bs mesons
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The Theoretical Spectrum of Mass of the Light Mesons without Strangeness via the Quarks’ Geometric Model 被引量:2
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作者 Giovanni Guido 《Journal of High Energy Physics, Gravitation and Cosmology》 2020年第3期388-415,共28页
Using the “Aureum Geometric Model” (AGM) of quarks, we formulate the structure equations describing mesons and, by a mathematic procedure, we calculate the theoretical spectrum of mass values of light mesons without... Using the “Aureum Geometric Model” (AGM) of quarks, we formulate the structure equations describing mesons and, by a mathematic procedure, we calculate the theoretical spectrum of mass values of light mesons without strangeness. 展开更多
关键词 QUARK Structure Equation Geometric Structure Golden Number Massive Coupling INTERPENETRATION IQuO PION MESON Photon
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Tensor Couplings of ω- and ρ-Mesons with Nucleons in a Derivative Scalar Coupling Model for Finite Nuclei
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作者 GUO Hua HU Xiang 《Chinese Physics Letters》 SCIE CAS CSCD 2001年第7期891-893,共3页
Theω-andρ-meson tensor couplings to nucleons in a derivative scalar coupling model for finite nuclei are investigated.The influences of the tensor couplings on the binding energies per nucleon,the root-mean-square c... Theω-andρ-meson tensor couplings to nucleons in a derivative scalar coupling model for finite nuclei are investigated.The influences of the tensor couplings on the binding energies per nucleon,the root-mean-square charge radii,spin-orbit splittings and single particle energies are discussed.The obtained results show that the spin-orbit splittings for finite nuclei are more sensitive to theω-meson tensor coupling. 展开更多
关键词 TENSOR coupling MESON
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Influence of σ^(* )and φ Mesons on (A) Hyperon ^(1)S_(0) Superfluidity in Neutron Star Matter
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作者 XU Yan LIU Guang-Zhou +2 位作者 WANG Hong-Yan DING Wen-Bo ZHAO En-Guang 《Chinese Physics Letters》 SCIE CAS CSCD 2012年第5期252-255,共4页
Within the framework of the relativistic mean field theory,we investigate the ^(1)S_(0) superfluidity (SF) of A hyperons in neutron star (NS) matter including σ^(*) and φ mesons.The energy gap of ∧ hyperons is calc... Within the framework of the relativistic mean field theory,we investigate the ^(1)S_(0) superfluidity (SF) of A hyperons in neutron star (NS) matter including σ^(*) and φ mesons.The energy gap of ∧ hyperons is calculated with the Nijmegen one-boson-exchange potentials for a (∧∧) pair. The parameter set we use is in line with the recent experimental data △B_(∧∧) ~ 1.01 ± 0.20_+0.18-0.11 MeV.It is found that with σ^(*) and φ mesons the pairing energy gap △F of ∧ hyperons and the corresponding SF critical temperature T_(C∧) are suppressed.In addition the NS mass range of ∧ hyperon SF is enlarged obviously. 展开更多
关键词 MESON RELATIVISTIC addition
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Meson-Nucleon Interaction and Excessive Mesons in Nuclei
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作者 WU Shishu YAO Yujie 《Chinese Physics Letters》 SCIE CAS CSCD 1995年第6期344-347,共4页
The effect of excessive mesons on the meson-nucleon interaction in nuclei is studied.It is shown that even if nonlinear meson interactions are considered,excessive mesons exist in the nuclear ground state(GS)and the G... The effect of excessive mesons on the meson-nucleon interaction in nuclei is studied.It is shown that even if nonlinear meson interactions are considered,excessive mesons exist in the nuclear ground state(GS)and the GS expectation value of the meson-nucleon interaction Hamiltonian is exactly equal to zero if there are no excessive mesons. 展开更多
关键词 MESON INTERACTION HAMILTONIAN
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Concept of Excessive Mesons in Nuclei
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作者 WU Shi-shu YAO Yu-jie 《Chinese Physics Letters》 SCIE CAS CSCD 1996年第5期347-350,共4页
The concept of excessive mesons in nuclei is discussed.Since nucleons are identical particles,it is pointed out that the physical content of a meson distribution around a bound nucleon in nuclei is different from that... The concept of excessive mesons in nuclei is discussed.Since nucleons are identical particles,it is pointed out that the physical content of a meson distribution around a bound nucleon in nuclei is different from that of a meson clotid around a free nucleon,if the effect of the principle of identity cannot be neglected.The difference is enunciated in detail. 展开更多
关键词 MESON NEGLECTED identical
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Oscillation Frequencyof𝐵and B𝐵Mesons in a QCD Potential Model with Relativistic Effects
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作者 Krishna Kingkar Pathak DKChoudhury 《Chinese Physics Letters》 SCIE CAS CSCD 2011年第10期55-57,共3页
Wavefunction at the origin,with the incorporation of a relativistic effect,leads to singularity in a specific potential model.To regularize the wavefunction,we introduced a short distance scale and used it to estimate... Wavefunction at the origin,with the incorporation of a relativistic effect,leads to singularity in a specific potential model.To regularize the wavefunction,we introduced a short distance scale and used it to estimate the mass and decay constants of Bd and Bs mesons within the QCD potential model.These values were then used to compute the oscillation frequency,ΔmB,of Bd and Bs mesons.The values were found to be in good agreement with experimental and other theoretical values. 展开更多
关键词 MESON SINGULARITY QCD
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Effective Masses of Mesons and Nucleon in Hot Medium for the Walecka Model
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作者 GAO Song ZHANG Yi-jun SU Ru-keng 《Chinese Physics Letters》 SCIE CAS CSCD 1996年第2期89-92,共4页
Based on tbe thermo-iield dynamics,the temperature and density dependencies of the elective masses of cr,uj mesons and nucleon in the walecka model have been calcula.ted.The vacuum fluctuation effect is examined.It is... Based on tbe thermo-iield dynamics,the temperature and density dependencies of the elective masses of cr,uj mesons and nucleon in the walecka model have been calcula.ted.The vacuum fluctuation effect is examined.It is found that the vacuum fluctuation is very important and leads to a reduction of cu-meson mass and an enhancement of a-meson mass in hot and dense medium. 展开更多
关键词 MESON VACUUM dynamics
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Solution of Salpeter Equation for 0^(-) Mesons Involving the Vacuum Condensates in Quantum Chromodynamics
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作者 BIAN Jianguo HUANG Tao 《Chinese Physics Letters》 SCIE CAS CSCD 1992年第6期285-288,共4页
We study the solutions of the salpeter equation for 0^(-) mesons of equal mass quark-antiquark.A potential which was derived in our previour paper in quantum chromodynamics in the background fields is used as the kern... We study the solutions of the salpeter equation for 0^(-) mesons of equal mass quark-antiquark.A potential which was derived in our previour paper in quantum chromodynamics in the background fields is used as the kernel.It includes the perturbative interaction of one gluon exchange and the nonperturbative corrections induced by the quark condensate and the gluon condensate.The results for m_(π),m_(ηc) and m_(ηb) are quite reasonable. 展开更多
关键词 QUARK CORRECTION MESON
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Masses and Widths of Light Scalar Mesons in Chiral Perturbation Theory
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作者 CHEN Xiao-Zhao LI Xiao-Ya LU Xiao-Fu 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第2期451-455,共5页
Based on the diquark model, we assume that the light scalar mesons are q^2q^-2 states rather than qq^-. The chiral effective Lagrangian for the light scalar meson is constructed, and the mass relations are obtained: ... Based on the diquark model, we assume that the light scalar mesons are q^2q^-2 states rather than qq^-. The chiral effective Lagrangian for the light scalar meson is constructed, and the mass relations are obtained: the isotriplet (a0) and the isosinglet (f0) are the heaviest and are degenerate, the isodoublets (κ) are heavier and the other isosinglet (σ) is the lightest; and 2Mκ^2 = Mα0^2+ Mσ^2. Using experimental value for a0 and σ mass, we obtain Mκ=794 MeV, which is consistent with the experimental value. Then taking Г(a0^0 →ηπ^0) = 90 MeV and Г(f0→π^0π^0) = 20 MeV, we get the width of σ is: Г(σ0→π^+π^-)= 150 MeV. 展开更多
关键词 scalar meson honer diquark model chiral perturbation theory
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On a Singular Solution in Higgs Field (Ⅲ): Condensates and Representation of Certain f0 Mesons' Masses
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作者 Kazuyoshi Kitazawa 《Journal of Physical Science and Application》 2013年第2期115-122,共8页
Recently the mass and the basic structure of SM Higgs boson (H^0) have been discussed by the author with obtaining asymptotic solution for the equation of motion of nonlinear Klein-Gordon type partial differential e... Recently the mass and the basic structure of SM Higgs boson (H^0) have been discussed by the author with obtaining asymptotic solution for the equation of motion of nonlinear Klein-Gordon type partial differential equation. In this paper, we will treat with above in mind: masses of glueball (GB) of ground state and of certain fo mesons, ur, Higgs boson (ur-H^0) which will consist of a number of GBs and/or fo above for respective fullerene structure, a representation of these fo mesons' masses by masses of n octet and GB, and transformation of ur-H^0 into H^0. 展开更多
关键词 Higgs boson mass GLUEBALL GLUON f0 meson Bethe-Salpeter equation.
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On Radiative Decay of Heavy Vector Mesons <i>V</i>&rarr;<i>P&gamma;</i>in the Scalar Strong Interaction Hadron Theory
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作者 F. C. Hoh 《Journal of Modern Physics》 2018年第4期584-595,共12页
Radiative decay of heavy ground state vector meson V → P&gamma;is treated semi-classically in the scalar strong interaction hadron theory. The treatment successfully employs the new wave function of the vector me... Radiative decay of heavy ground state vector meson V → P&gamma;is treated semi-classically in the scalar strong interaction hadron theory. The treatment successfully employs the new wave function of the vector meson updated here. The ratio of the available J/ψ and decay rates agrees with prediction. The values of the predicted rates are also in order of magnitude agreement with measurements. These agreements are the only ones directly computed from a first principles’ theory. 展开更多
关键词 Radiative Decay Vector MESON SCALAR Strong Interaction Semi-Classical
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A New Approach to Mesons’ States and Their Dependence on Spin and Isospin: A Mathematical Study
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作者 Alireza Heidari Seyedali Vedad Mohammadali Ghorbani 《Journal of Modern Physics》 2012年第5期412-419,共8页
The following article has been retracted due to the investigation of complaints received against it. Mr. Mohammadali Ghorbani (corresponding author and also the last author) cheated the authors’ name: Alireza Heidari... The following article has been retracted due to the investigation of complaints received against it. Mr. Mohammadali Ghorbani (corresponding author and also the last author) cheated the authors’ name: Alireza Heidari and Seyedali Vedad. The scientific community takes a very strong view on this matter and we treat all unethical behavior such as plagiarism seriously. This paper published in Vol.3 No.5 412-419, 2012, has been removed from this site. 展开更多
关键词 MESON SPIN ISOSPIN QUARK Antiquark
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Strong vertices of bottom mesons B and B^(*) and bottomonia Υ,ηb
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作者 卢杰 于国梁 +1 位作者 王志刚 吴彬 《Chinese Physics C》 SCIE CAS CSCD 2024年第1期17-28,共12页
In this study,the strong coupling constants of vertices BBΥ,BB^(∗)Υ,B^(∗)B^(∗)Υ,BB^(∗)ηb,and B^(∗)B^(∗)ηb are analyzed in the framework of QCD sum rules.All possible off-shell cases and the contributions of vacuu... In this study,the strong coupling constants of vertices BBΥ,BB^(∗)Υ,B^(∗)B^(∗)Υ,BB^(∗)ηb,and B^(∗)B^(∗)ηb are analyzed in the framework of QCD sum rules.All possible off-shell cases and the contributions of vacuum condensate terms including<qq>,<(qgsσGq>,<g_(s)^(2)G^(2)>,<f^(3)G^(3)>,and<qq><g_(s)^(2)G^(2)>are considered.The momentum dependent strong coupling constants are first calculated and then fitted into the analytical function g(Q^(2)),which is extrapolated to time-like regions to obtain the final values of strong coupling constants.The final results are gBBΥ=40.67+7.55−4.20,gBB^(∗)Υ=11.58+2.19−1.09 GeV−1,gB^(∗)B^(∗)Υ=57.02+5.32−5.31,gBB^(∗)ηb=23.39+4.74−2.30,and gB^(∗)B^(∗)ηb=12.49+2.12−1.35 GeV−1.These strong coupling constants are important input parameters that reflect the dynamic properties of the interactions among the mesons and quarkonia. 展开更多
关键词 bottom meson strong coupling constants QCD sum rules
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Study of transversity GPDs from pseudoscalar mesons production at EIC of China
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作者 S V Goloskokov Ya-Ping Xie Xurong Chen 《Communications in Theoretical Physics》 SCIE CAS CSCD 2023年第6期86-95,共10页
The exclusive η and π^(0)electroproduction is studied in the handbag approach based on the generalized parton distributions(GPDs)factorization.Predictions of π^(0)and η mesons are calculated for future electron-io... The exclusive η and π^(0)electroproduction is studied in the handbag approach based on the generalized parton distributions(GPDs)factorization.Predictions of π^(0)and η mesons are calculated for future electron-ion collider in China(EicC)energy ranges,using obtained cross sections we extract information on the transversity GPDs contributions to these processes. 展开更多
关键词 meson production general parton distributions handbag method
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Spin alignment of vector mesons from quark dynamics in a rotating medium
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作者 魏明华 黄梅 《Chinese Physics C》 SCIE CAS CSCD 2023年第10期154-166,共13页
Vorticities in heavy-ion collisions(HICs)are supposed to induce spin alignment and polarization phenomena of quarks and mesons.In this work,we analyze the spin alignment of vector mesonsϕandρinduced by rotation from ... Vorticities in heavy-ion collisions(HICs)are supposed to induce spin alignment and polarization phenomena of quarks and mesons.In this work,we analyze the spin alignment of vector mesonsϕandρinduced by rotation from quark dynamics in the framework of the Nambu-Jona-Lasinio(NJL)model.The rotating angular velocity induces mass splitting of spin components for vectorϕ,ρmesons M_(ϕ,ρ)(Ω)≃M_(ϕ,ρ)(Ω=0)−szΩ.This behavior contributes to the spin alignment of vector mesonsϕ,ρin an equilibrium medium and naturally explains the negative deviation ofρ00−1/3 for vector mesons.Incidentally,the positive deviation ofρ00−1/3 under the magnetic field can also be easily understood from quark dynamics. 展开更多
关键词 spin alignment QCD medium vector meson
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