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PKU HEP Seminar and Workshop (北京大学高能物理组)

# $Z′$ bosons at the P2 experiment

## by Yongchao Zhang (Southeast University)

Friday, June 18, 2021 from to (Asia/Shanghai)
at CHEP ( B105 )
 Description The weak mixing angle is to be measured in the P2 experiment with elastic electron-proton and electron-$^{12}$C scattering. If there is a (light) $Z′$ boson with parity-violating couplings to the standard model (SM) fermions, it will contribute additional parity violation to the P2 measurements. For the non-chiral $Z′$ scenarios, it is found that the P2 experiment can probe a coupling as small as $10^{−5}$ for a light $Z′$, or an effective cutoff scale up to 90 TeV when $Z′$ is heavy. If the parity-violating couplings of $Z′$ are from mass mixings with the SM $Z$ boson, the P2 experiment is sensitive to a mass mixing angle smaller than roughly $10^{−4}$. Introduction of the speaker:: Dr. Yongchao Zhang, Associate Professor at Southeast University, got his Ph.D. from Peking University in 2014. He was once a visiting scholar at University of Maryland and Institute of Theoretical Physics, Chinese Academy of Sciences, and a postdoctor at Université Libre de Bruxelles and Washington University in St. Louis. He is mainly interested in beyond standard model phenomenology and relevant astrophysics and cosmology, such as neutrino physics, axion physics, and the interplay of particle physics and astrophysics. Online Tencent/VOOV meeting: https://meeting.tencent.com/s/sJpN7iPzzVVm 会议 ID：565 882 987  Participants Xiong-Hui Cao; Katsuya Hashino; Pengcheng Li; Jia Liu; Yandong Liu; Yi Lu; Hong-Hao Ma; Bo-Qiang Ma; Qiaomu Peng; Yunxuan Song; Shian Tang; yuanyuan wang; Xiaoyang Wang; shanjin wu; Teng Xiang; 雨轩 何; 一朝 唐; 凡强 孟; 衢智 李; 衢智 李; 檀生 程; 立诚 章; 昕海 谢; 杜鑫 郑; 金辉 郭; 浩鹏 闫