Study of the tau^- -> K^- pi^+ pi^- nu_tau decay

Details Study of the tau^- -> K^- pi^+ pi^- nu_tau decay Study of the tau^- -> K^- pi^+ pi^- nu_tau decay

2008-12-02

arxiv.org/abs/0812.0480v1

Physics

High Energy Physics

High Energy Physics - Experiment

17 pages, 11 figures. Contributed to ICHEP08 (Philadelphia, USA, Jul. 2008) and TAU08 (Novosibirsk, Russia, Oct. 2008)

Scientific paper

We present a study of tau^- -> K^- pi^+ pi^- nu_tau decay using ~669 /fb data, collected with the Belle detector at the KEKB asymmetric-energy e^+ e- collider. The data is recorded at a center-of-mass energy 10.58 GeV. The result for the branching ratio is : B = (3.25 +- 0.02(stat.) +0.16 -0.15(sys.))x10^-3 >. We also present results of the precise measurement of the branching ratio of other 3-prong decay modes, tau^- -> pi^- pi^+ pi^- nu_tau, tau^- -> K^- K^+ pi^- nu_tau, and tau^- -> K^- K^+ K^- nu_tau .

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