CP Violation in τ Decays at SuperB & Super-Belle Experiments -- like Finding Signs of Dark Matter

2012/10/10 by I. I. Bigi, Bigi, I. I.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.1210.2968

7 pages; talk given at Tau2012 Workshop at Nagoya (Japan)

arxiv created 2012/10/10 · arxiv updated 2012/10/11

Abstract

BaBar has found A_{\rm CP}(τ^- → νK_Sπ^- [≥ π⁰]) = (-0.36 ± 0.23 ± 0.11)% with 2.8 σ difference with SM prediction A_{\rm CP}(τ^- → νK_Sπ^-) = (0.36 ± 0.01)% based on K⁰ - K⁰ oscillation. Four central points: (i) to establish both the `existence' of New Dynamics (ND) and its `features' in local CP asymmetries; (ii) to increase the number of final states to be probed; (iii) to emphasize correlations of CP violations between different final states; (iv) likewise for the correlations with D^± final states. These measurements should be possible at SuperB & Belle II experiments.

Related

• Probing CP Violation in τ^- → ν(Kπ/K2π/ 3K/ K3π)^- Decays
• Probing violation of CP & T invariance in the transitions of τ leptons
• Search for CP violation in D⁰ → K⁺K^-,π⁺π^- and D⁰ → π⁰π⁰
• CP violation in D⁰ → K_S⁰ K_S⁰ decay at Belle
• CP Violation: Present and Future