New physics and two boosted W-jets plus missing energy  

作　　者：Qing-Hong Cao Nuo Chen Hao-Ran Jiang Bin Li Yandong Liu 曹庆宏;陈诺;蒋浩然;历斌;刘言东(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)

机构地区：[1]School of Physics and State Key Laboratory of Nuclear Physics and Technology,Peking University,Beijing 100871,China [2]Collaborative Innovation Center of Quantum Matter,Beijing 100871,China [3]Center for High Energy Physics,Peking University,Beijing 100871,China [4]Key Laboratory of Beam Technology of Ministry of Education,College of Nuclear Science and Technology,Beijing Normal University,Beijing 100875,China [5]Beijing Radiation Center,Beijing 100875,China

出　　处：《Chinese Physics C》2021年第9期97-101,共5页中国物理C（英文版）

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)。

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.

关 键 词：new physics collider physics SUPERSYMMETRY 

分 类 号：O572[理学—粒子物理与原子核物理]