Precise measurement of Br(tau^- -> K^*0(892) K^- nu_tau) and the mass and width of the K^*0(892) meson

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dc.creatorThe Belle Collaboration
dc.creatorAdachi, I.
dc.date2008-08-07
dc.date.accessioned2026-07-07T09:55:26Z
dc.date.available2026-07-07T09:55:26Z
dc.descriptionUsing the high statistics tau data sample recorded in the Belle experiment at KEKB, we have greatly improved the precision of the branching fraction Br(tau^- -> K^*0(892) K^- nu_tau) = (1.56+-0.02+-0.09)x10^-3, while the mass and width of the K^*0(892) meson are measured to be (895.10+-0.27+-0.31) MeV/c^2 and (47.23+-0.49+-0.79) MeV/c^2, respectively, with better accuracy than the PDG world average values. The first measurement of the decay tau^- -> K^*0(892) K^- pi^0 nu_tau is also reported with a branching fraction of Br(tau^- -> K^*0(892) K^- pi^0 nu_tau)=(2.39+-0.46+-0.26)x10^-5.
dc.description9 pages, 4 figures, Contributed to the 34th International Conference on High Energy Physics, Philadelphia, USA, July 2008
dc.identifierhttps://arxiv.org/abs/0808.1059
dc.identifierhttp://arxiv.org/abs/0808.1059
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/166625
dc.subjectHigh Energy Physics - Experiment
dc.titlePrecise measurement of Br(tau^- -> K^*0(892) K^- nu_tau) and the mass and width of the K^*0(892) meson
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