Probing vector-like top partner from same-sign dilepton events at the LHC  

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作  者:Hang Zhou Ning Liu 

机构地区:[1]Physics Department and Institute of Theoretical Physics,Nanjing Normal University,Nanjing,210023,China

出  处:《Communications in Theoretical Physics》2020年第10期80-86,共7页理论物理通讯(英文版)

基  金:supported by the National Natural Science Foundation of China(NNSFC)under grant Nos.11847208 and 11705093;the Jiangsu Planned Projects for Postdoctoral Research Funds under grant No.2019K197。

摘  要:The standard model is a successful theory but is lacking a mechanism for neutrino mass generation as well as a solution to the naturalness problem.In the models that are proposed to simultaneously solve the two problems,heavy Majorana neutrinos and top partners are usually predicted to lead to a new decay mode of the top partner mediated by the heavy Majorana neutrinos:T→b W^+→b l^+l^+qq^1.In this paper,we will study the observability of such a new signature via the pair production process of a top partner pp→TT→2 b+l^±l^±+4 j in a model independent way.By performing Monte Carlo simulations,we present the 2σexclusion limits of the top partner mass and mixing parameters at the HL-LHC.

关 键 词:top quark partner LHC same sign leptons 

分 类 号:O572.214[理学—粒子物理与原子核物理]

 

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