CP violation of tau -> K pi(eta, eta') nu decays

Details CP violation of tau -> K pi(eta, eta') nu decays CP violation of tau -> K pi(eta, eta') nu decays

2008-08-05

arxiv.org/abs/0808.0674v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

28pages, 9 figures V2: Typos in Eq.(48)-(49) were corrected. (A->AR,B->BR,C->CR,D->DR)

Scientific paper

We study direct CP violation of tau -> K pi(eta,eta')nu decays. By studying the forward and backward asymmetry, the interference of L=0 and L=1 amplitudes of the hadronic system can be extracted. By including the scalar and vector mesons into the chiral Lagrangian, we compute the form factors which correspond to L=0 and L=1 angular momentum state of the hadronic system. We include real and imaginary parts of the one loop corrections to the self-energies of the scalar and vector mesons. The direct CP violation of the forward and backward asymmetry is computed using a two Higgs doublet model in which a new CP violating phase is introduced. We show how the CP violation of the forward and the backward asymmetry may depend on the new CP violating phase and the strong phase of the form factors.

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