両角卓也(もろずみたくや）

所属機関：広島大学大学院理学研究科

題目:CP violation of tau decays

Abstract

CP violation of tau hadronic decays (tau \to K \pi(eta) \nu )are studied. 

The Flavor diagonal (tau_R \to \nu_{\tau L})　CP violating source from 

charged Higgs exchange may generate the direct CPV.The hadronic 

form factors are calculated using the chiral Lagrangian with the scalar 

and vector resonances (kappa(800) K*(890)..) incorporated.　

Based on this, the forward and backward CP asymmetry  are computed.

The CP asymmetry can be as large as 10% depending on the hadronic 

invariant mass. We also compute the CPV effect on edm of tau. 

The constraints from the other processes such as B -tau nu are also studied.

（Collaborators：Kang Young Lee (Korea U.),　

Daiji Kimura(Hiroshima), Keita Nakagawa (Hiroshima) ）