Speaker
Dr
Cheng Li
(Sun-Yat-Sen University)
Description
We study possible CP-violation effects of the Higgs to $Z$-boson coupling
at a future $e^+ e^-$ collider, e.g. the International Linear Collider (ILC). We find that the azimuthal angular distribution of the muon pair, produced by $e^+ e^- \rightarrow H Z -> H \mu^+ \mu^-$, 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 limit of the CP-odd coupling in $HZZ$ interaction, including as well studies from unpolarized and longitudinally-polarized beams.
Primary authors
Dr
Cheng Li
(Sun-Yat-Sen University)
Gudrid Moortgat-Pick
