Addendum to the Test of CP Violation in Tau Decay

Details Addendum to the Test of CP Violation in Tau Decay Addendum to the Test of CP Violation in Tau Decay

1995-07-31

arxiv.org/abs/hep-ph/9507464v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 page LaTeX file - To obtain a copy, send e-mail to techpub@slac.stanford.edu

Scientific paper

We discuss the test of CP and CPT violation in $\tau$ decay without using the polarized electron beam by comparing partial fractions of $\tau^-$ and $\tau^+$ decay into channels with strong final state interactions. For example, $\Gamma(\tau^-\rarrow \pi^-+\pi^0+\nu) \ne \Gamma(\tau^+\rarrow \pi^++\pi^0+\nu)$ signifies violation of CP. The optimum energy to investigatge CP violation in $\tau$ decay is discussed. We conclude that this energy is a few MeV below $\psi(2s)$ in order to avoid the charm contribution and over abundance of hadrons at the $\psi(2s)$ peak.

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