Speaker
Yongchao Zhang
(Southeast University)
Description
The weak mixing angle is to be measured in the P2 experiment with elastic electron-proton and eletron-$^{12}$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 $10^{-4}$.
Authors
Yongchao Zhang
(Southeast University)
Bhupal Dev
(Washington University in St. Louis)
Xunjie Xu
Dr
Werner Rodejohann
(MPIK, Heidelberg)
