摘要
We show that the signature of two boosted W-jets plus substantial missing energy is very promising for probing heavy charged resonances(X^(±))through the process of pp→X^(+)X^(-)→W^(+)W^(-)X^(0) X^(0),where X^(0) denotes the dark matter candidate.The hadronic decay mode of the W boson is considered to maximize the number of signal events.When the mass split between X±and X0 is large,the jet-substructure technique must be utilized to analyze the boosted W-jet.Here,we consider the process of chargino pair production at the LHC,i.e.,pp→χ^(+)_(1)χ^(-)_(1)→W^(+)W^(-)χ^(0)_(1)χ^(0)_(1),and demonstrate that the proposed signature is able to cover more parameter space of m_(χ1)^(±)and m_(χ1)0,than the conventional signature of multiple leptons plus missing energy.More importantly,the signature of interest is not sensitive to the spin of heavy resonances.
作者
曹庆宏
陈诺
蒋浩然
历斌
刘言东
Qing-Hong Cao;Nuo Chen;Hao-Ran Jiang;Bin Li;Yandong Liu(School of Physics and State Key Laboratory of Nuclear Physics and Technology,Peking University,Beijing 100871,China;Collaborative Innovation Center of Quantum Matter,Beijing 100871,China;Center for High Energy Physics,Peking University,Beijing 100871,China;Key Laboratory of Beam Technology of Ministry of Education,College of Nuclear Science and Technology,Beijing Normal University,Beijing 100875,China;Beijing Radiation Center,Beijing 100875,China)
基金
Supported in part by the National Science Foundation of China(11725520,11675002,11635001,11805013,12075257)
the Fundamental Research Funds for the Central Universities(2018NTST09)。
