Speaker
Cheng Li
(FTX (FTX Fachgruppe SLB))
Description
e study possible CP-violation effect of the Higgs to Z boson coupling
at the future $e^+e^−$ collider. We find that the azimuthal angular distribution of the muon, produced by $e^+e^− \rightarrow HZ → H\mu^−\mu^+$, can be sensitive to such a CP-violation effect when we apply initial transversely polarized beams. Based on this angular
distribution, we construct a CP sensitive asymmetry, and obtain this asymmetry by Whizard simulation. By comparing the SM prediction with $2\sigma$-range of this asymmetry, we estimate the discovery limit of the CP-odd coupling in HZZ interaction, which is $\tilde{c}_{AZZ}\in[-0.1, 0.1]$ for $500~\mathrm{fb}^{−1}$, and $\tilde{c}_{AZZ}\in[-0.05, 0.05]$ for $2000~\mathrm{fb}^{−1}$.
| Collaboration / Activity | Non |
|---|
Primary authors
Cheng Li
(FTX (FTX Fachgruppe SLB))
Gudrid Moortgat-Pick
(University of Hamburg / DESY)
