The proposed Circular Electron Positron Collider(CEPC)with a center-of-mass energy√s=240GeV will primarily serve as a Higgs factory.Additionally,it will offer good opportunities to search for new physics phenomena at...The proposed Circular Electron Positron Collider(CEPC)with a center-of-mass energy√s=240GeV will primarily serve as a Higgs factory.Additionally,it will offer good opportunities to search for new physics phenomena at low energies,which can be challenging with hadron colliders;however,these discoveries are highly motivated by theoretical models developed to explain,e.g.,the relic abundance of dark matter.This paper presents sensitivity studies for chargino pair production by considering scenarios for both a Bino-like and a Higgsino-like neutralino as the lightest supersymmetric particle and using a full Monte Carlo(MC)simulation.By assuming systematic uncertainties at the level of 5%,the CEPC has the ability to discover chargino pair production up to the kinematic limit of for√s/2 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.展开更多
基金Supported by the National Key Programme(2018YFA0404000)。
文摘The proposed Circular Electron Positron Collider(CEPC)with a center-of-mass energy√s=240GeV will primarily serve as a Higgs factory.Additionally,it will offer good opportunities to search for new physics phenomena at low energies,which can be challenging with hadron colliders;however,these discoveries are highly motivated by theoretical models developed to explain,e.g.,the relic abundance of dark matter.This paper presents sensitivity studies for chargino pair production by considering scenarios for both a Bino-like and a Higgsino-like neutralino as the lightest supersymmetric particle and using a full Monte Carlo(MC)simulation.By assuming systematic uncertainties at the level of 5%,the CEPC has the ability to discover chargino pair production up to the kinematic limit of for√s/2 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.
