T-odd top partner pair production in the dilepton final states at the LHC in the littlest Higgs Model with T-parity

  • 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 ppT_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 2σ 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.
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Bingfang Yang, Huaying Zhang, Biaofeng Hou and Ning Liu. T-odd top partner pair production in the dilepton final states at the LHC in the littlest Higgs Model with T-parity[J]. Chinese Physics C, 2018, 42(10): 103102. doi: 10.1088/1674-1137/42/10/103102
Bingfang Yang, Huaying Zhang, Biaofeng Hou and Ning Liu. T-odd top partner pair production in the dilepton final states at the LHC in the littlest Higgs Model with T-parity[J]. Chinese Physics C, 2018, 42(10): 103102.  doi: 10.1088/1674-1137/42/10/103102 shu
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Received: 2018-05-18
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    Supported by National Natural Science Foundation of China (NNSFC) (11405047, 11305049) and the Startup Foundation for Doctors of Henan Normal University (qd15207).

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T-odd top partner pair production in the dilepton final states at the LHC in the littlest Higgs Model with T-parity

  • 1.  College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, China
  • 2.  Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, Nanjing 210023, China
Fund Project:  Supported by National Natural Science Foundation of China (NNSFC) (11405047, 11305049) and the Startup Foundation for Doctors of Henan Normal University (qd15207).

Abstract: 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 ppT_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 2σ 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.

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