Rare tau decays at Belle

K. Hayasaka

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arXiv · 1111.1545

Rare tau decays at Belle

K. Hayasaka

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Abstract

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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K. Hayasaka. 2011-11-07. Rare tau decays at Belle. https://arxiv.org/abs/1111.1545

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