Test of lepton universality and searches for lepton flavor violation at BaBar

Abstract

The BaBar experiment has recently obtained some important results in the search for new physics in leptonic and lepton flavor violating decays, exploiting the complete datasets collected at the ${\rm Y}(4S)$, ${\rm Y}(3S)$ and ${\rm Y}(2S)$ energies. In particular, new limits on the ratio $\Gamma ({\rm Y}(1S)\to {\tau }^{+}{\tau }^{-})/\Gamma ({\rm Y}(1S)\to {\mu }^{+}{\mu }^{-})$, on lepton flavor violating decays of the ${\rm Y}(3S)$ and ${\rm Y}(2S)$, and on $\tau$ decays to three charged leptons or $\tau \to e/\mu \gamma$ are presented.

6 pages, 6 postscript figures. Proceeding for the talk given on 45th Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 06 - 13 Mar 2010

References in corpus (3)

• Search for Lepton Flavor Violating Tau Decays into Three Leptons with 719 Million Produced Tau+Tau- Pairs
• Limits on tau Lepton-Flavor Violating Decays in three charged leptons
• Test of lepton universality in Upsilon(1S) decays at BaBar