A search for the decay modes B+/- to h+/- tau l

Details A search for the decay modes B+/- to h+/- tau l A search for the decay modes B+/- to h+/- tau l

2012-04-12

arxiv.org/abs/1204.2852v1

Physics

High Energy Physics

High Energy Physics - Experiment

15 pages, 7 figures, submitted to Phys. Rev. D

Scientific paper

We present a search for the lepton flavor violating decay modes B+/- to h+/- tau l (h= K,pi; l= e,mu) using the BaBar data sample, which corresponds to 472 million BBbar pairs. The search uses events where one B meson is fully reconstructed in one of several hadronic final states. Using the momenta of the reconstructed B, h, and l candidates, we are able to fully determine the tau four-momentum. The resulting tau candidate mass is our main discriminant against combinatorial background. We see no evidence for B+/- to h+/- tau l decays and set a 90% confidence level upper limit on each branching fraction at the level of a few times 10^-5.

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