文献类型：期刊文献

英文题名：Signature of heavy sterile neutrinos at CEPC

作者：Liao, Wei[1];Wu, Xiao-Hong[1]

机构：[1]East China Univ Sci & Technol, Inst Modern Phys, Sch Sci, Meilong Rd 130, Shanghai 200237, Peoples R China

年份：2018

卷号：97

期号：5

外文期刊名：PHYSICAL REVIEW D

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000426630500006)】；

基金：This research is supported in part by the Natural Science Foundation of China (NSFC), Grants No. 11135009 and No. 11375065, and in part by the Shanghai Key Laboratory of Particle Physics and Cosmology, Grant No. 15DZ2272100. X.H.W. would like to thank Qi-Shu Yan for helpful discussions on MadGraph and CEPC.

语种：英文

摘要：We study the production of heavy sterile neutrino N, e(+)e(-) -> N upsilon((upsilon) over bar), at the Circular Electron Positron Collider (CEPC) and its ljj signal in its decay to three charged fermions. We study background events for this process which are mainly events coming from W pair production. We study the production of a single heavy sterile neutrino and the sensitivity of CEPC to the mixing of the sterile neutrino with active neutrinos. We study the production of two degenerate heavy sterile neutrinos in a low energy seesaw model by taking into account the constraints on mixings of sterile neutrinos from the neutrinoless double beta decay experiment and the masses and mixings of active neutrinos. We show that CEPC under proposal has a good sensitivity to the mixing of sterile neutrinos with active neutrinos for a mass of a sterile neutrino around 100 GeV.