Study of the Lepton Flavor Violating Decay τ^- → μ^- η

2006/07/24 by The BABAR Collaboration, Aubert, B.
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)

paper · doi:10.48550/arxiv.hep-ex/0607045

Abstract

We present the preliminary results from the search of the non-conservation of lepton flavor number in the decay of a τ to a lighter mass lepton and a pseudo-scalar meson, performed using e⁺e^- → τ⁺τ^- 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× 10^-7 at 90% confidence level on the decay of τ^- → μ^-η.

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