Probing CP Violation in τ^- → ν(Kπ/K2π/ 3K/ K3π)^- Decays

2012/04/26 by I. I. Bigi, Bigi, I. I.
Physics and Astronomy · #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.48550/arxiv.1204.5817

8 pages, no figures

arxiv created 2012/06/19 · arxiv updated 2012/06/21

Abstract

It had been suggested to probe CP violation in τ → νKπ decays with K0 -K ^-0 oscillation to produce ACP(τ- → νKSπ-) = (0.36±0.01)%. BaBar has found ACP(τ- → νKSπ-[≥ π0]) = (-0.36 ± 0.23 ± 0.11)% - i.e., 2.8 sigma difference with SM prediction. It is discussed, why one needs to probe ACP(τ → νKπ), ACP(τ → νK2π) and ACP(τ → νK3π) separately to establish the existence of New Dynamics and its features. It should be possible at SuperB & Super-Belle experiments.

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