摘要
New physics could be explored through loop effects using the precision measurements at the Circular Electron Positron Collider(CEPC)owing to its clean collision environment and high luminosity.In this paper,we focus on two dark matter models that involve additional electroweak fermionic multiplets.We calculate their one-loop corrections in five processes,i.e.,e^(+)e^(-)→μ^(+)μ^(-),Zh,W^(+)W^(-),ZZ,and,Zγ,and investigate the corresponding signatures at the CEPC with the projected sensitivity.We observe that the detectable parameter regions of these processes are complementary.The combined analysis shows that the mass of dark matter m_(χ^(0)_(1))in these two models can be probed up to-150GeV and-450GeV,respectively,at a 95%confidence level.
作者
Lin-Qing Gao
Xiao-Jun Bi
Jin-Wei Wang
Qian-Fei Xiang
Peng-Fei Yin
高林青;毕效军;王金伟;向仟飞;殷鹏飞(Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China;Scuola Internazionale Superiore di Studi Avanzati(SISSA),via Bonomea 265,34136 Trieste,Italy;INFN,Sezione di Trieste,via Valerio 2,34127 Trieste,Italy;Institute for Fundamental Physics of the Universe(IFPU),via Beirut 2,34151 Trieste,Italy;Center for High Energy Physics,Peking University,Beijing 100871,China)
基金
Supported by the National Natural Science Foundation of China (12175248)
Supported by the research grant"the Dark Universe:A Synergic Multi-messenger Approach"number (2017X7X85K) under the program PRIN 2017 funded by the Ministero dell’Istruzione,Universitàe della Ricerca (MIUR)
