Search for Lepton Flavor Violating tau Decays at B-factories

TL;DR

This paper reviews recent searches for lepton flavor violation in tau decays at B-factories, highlighting background reduction techniques and setting upper limits on branching fractions at the 10^{-8} level.

Contribution

It provides an overview of experimental searches for tau lepton flavor violation and reports the current upper limits achieved.

Findings

No evidence for lepton flavor violating tau decays was observed.

Upper limits on branching fractions are at the order of 10^{-8}.

Optimization techniques for background reduction are crucial for sensitivity.

Abstract

Lepton flavor violations in charged lepton give good signatures for the new physics. We review recent searches for lepton flavor violation in tau decays at B-factories. In these searches, optimization for background reduction is important to obtain high sensitivity. No evidence for these decays is observed and 90% confidence level upper limits have been set on the branching fractions at the O(10^{-8}) level.