Study of the Lepton Flavor Violating Decay $τ^{-} \to μ^{-} η$

Details Study of the Lepton Flavor Violating Decay $τ^{-} \to μ^{-} η$ Study of the Lepton Flavor Violating Decay $τ^{-} \to μ^{-} η$

2006-07-24

arxiv.org/abs/hep-ex/0607045v1

Physics

High Energy Physics

High Energy Physics - Experiment

16 pages, 6 postscript figues, submitted to ICHEP2006

Scientific paper

We present the preliminary results from the search of the non-conservation of lepton flavor number in the decay of a $\tau$ to a lighter mass lepton and a pseudo-scalar meson, performed using $e^+e^- \to \tau^+\tau^-$ events collected at a center-of-mass energy near 10.58 GeV with the BABAR detector at the SLAC PEP-II $e^+e^-$ storage ring. No evidence of such a signal has been found in the data sample corresponding to a luminosity of 314.5 fb$^{-1}$, and we set an upper limit of $1.6\times 10^{-7}$ at 90% confidence level on the decay of $\tau^- \to \mu^-\eta$.

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