摘要
In the littlest Higgs model with T-parity, we discuss the pair production of the T-odd top partner （T_） that decays almost 100% into the top quark and the lightest T-odd particle （AH）. Considering the current constraints, we investigate the observability of the T-odd top partner pair production through the process pp→T_T_ →ttAHAH in the final states with two leptons at 14 TeV LHC. We analyze the signal significance and found that the lower limits on the T-odd top partner mass are approximately 1.2 TeV, 1.3 TeV, and 1.4 TeV at the 2or confidence level at 14 TeV LHC with an integrated luminosities of 30 fb^-1, 100 fb^-1, and 300 fb^-1, respectively. This lower limit can be increased to approximately 1.5（1.6） TeV if we used 1000（3000） fb^-1 of the integrated luminosity.
In the littlest Higgs model with T-parity, we discuss the pair production of the T-odd top partner （T_） that decays almost 100% into the top quark and the lightest T-odd particle （AH）. Considering the current constraints, we investigate the observability of the T-odd top partner pair production through the process pp→T_T_ →ttAHAH in the final states with two leptons at 14 TeV LHC. We analyze the signal significance and found that the lower limits on the T-odd top partner mass are approximately 1.2 TeV, 1.3 TeV, and 1.4 TeV at the 2or confidence level at 14 TeV LHC with an integrated luminosities of 30 fb^-1, 100 fb^-1, and 300 fb^-1, respectively. This lower limit can be increased to approximately 1.5（1.6） TeV if we used 1000（3000） fb^-1 of the integrated luminosity.
基金
Supported by National Natural Science Foundation of China(NNSFC)(11405047,11305049)
the Startup Foundation for Doctors of Henan Normal University(qd15207)
