Prospects for chargino pair production at the CEPC

• 作者: Jia-Rong Yuan Hua-Jie Cheng Xu-Ai Zhuang
• 来源期刊: 中国物理C（英文版）
• 年，卷（期）: 2022,（1）
• 所属期刊栏目: PARTICLES AND FIELDS
• 页码范围: 72-79
• 页数: 8页
• 语种: 英文
• DOI: 10.1088/1674-1137/ac2f93

摘要

The proposed Circular Electron Positron Collider (CEPC) with a center-of-mass energy √s =240 GeV will primarily serve as a Higgs factory.Additionally,it will offer good opportunities to search for new physics phe-nomena at low energies,which can be challenging with hadron colliders;however,these discoveries are highly mo-tivated by theoretical models developed to explain,e.g.,the relic abundance of dark matter.This paper presents sens-itivity studies for chargino pair production by considering scenarios for both a Bino-like and a Higgsino-like neut-ralino as the lightest supersymmetric particle and using a full Monte Carlo (MC) simulation.By assuming systemat-ic uncertainties at the level of 5％,the CEPC has the ability to discover chargino pair production up to the kinematic limit of √s/2 for both scenarios.The results have a minor dependence on the reconstruction model and detector geometry.These results can also be considered as a reference and benchmark for similar searches at other proposed electron-positron colliders,such as the Future Circular Collider ee (FCC-ee) or the International Linear Collider(ILC),given the similar nature of the facilities,detectors,center-of-mass energies,and target luminosities.