Search for Lepton Flavor Violating tau- Decays Including with a K0s Meson

Abstract

We have searched for the lepton flavor violating decays $τ^-\to \ell^-\ks$ ($\ell =eor\mu$), using a data sample of 281 fb${}^{-1}$ collected with the Belle detector at the KEKB $e^{+}{e}^{-}$ asymmetric-energy collider. No evidence for a signal was found in either of the decay modes, and we set the following upper limits for the branching fractions: ${\cal{B}}(τ^-\to e^-\ks) < 5.6\times 10^{-8}$ and ${\cal{B}}(τ^-\to μ^-\ks) < 4.9\times 10^{-8}$ at the 90% confidence level. These results improve the previously published limits set by the CLEO collaboration by factors of 16 and 19, respectively.

9 pages, 3figures, submitted to Phys.Lett. B

References in corpus (6)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• R-parity violating supersymmetry
• τ- μFlavor Violation as a Probe of the Scale of New Physics
• Measurement of Time-Dependent CP-Violating Asymmetries in $B_0\to K_s{K}_s{K}_s$ Decay
• Measurement of the e+e- -> D(*)+D(*)- cross-sections
• Search for Neutrinoless tau Decays Involving the K_S^0 Meson

Cited by in corpus (6)

• The Physics of the B Factories
• Physics at a future Neutrino Factory and super-beam facility
• New Physics at a Super Flavor Factory
• Search for Lepton Flavor Violating tau- Decays into \ell-K0s and \ell-K0sK0s
• Search for Lepton Flavour Violating Decays $\tau \to \ell K_S^0$ with the BaBar Experiment
• Tau Physics from B Factories