Rare tau decays at Belle

Details Rare tau decays at Belle Rare tau decays at Belle

2011-11-07

arxiv.org/abs/1111.1545v1

Physics

High Energy Physics

High Energy Physics - Experiment

4 pages, 3 figures. contribution to the EPS-HEP2011, July 21-27, 2011, Grenoble, Rhone-Alpes, France

Scientific paper

We report results of a search for tau lepton decays strongly suppressed in the Standard Model based on the world-largest data sample accumulated with the Belle detector at the KEKB asymmetric-energy e+e- collider. The decays include: lepton flavor and lepton number violating tau decays into a lepton (e or mu) and two charged mesons (K or pi) as well as lepton and baryon number violating tau decays into a Lambda and a charged meson (K or pi). The sensitivity to the branching fractions is significantly improved compared to our previous results and reaches O(10^{-8}).

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