V_us and m_s from hadronic tau decays

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dc.creatorGamiz, E.
dc.creatorJamin, M.
dc.creatorPich, A.
dc.creatorPrades, J.
dc.creatorSchwab, F.
dc.date2004-08-03
dc.date.accessioned2026-07-07T10:29:14Z
dc.date.available2026-07-07T10:29:14Z
dc.descriptionRecent experimental results on hadronic tau decays into strange particles by the OPAL collaboration are employed to determine V_us and m_s from moments of the invariant mass distribution. Our results are V_us = 0.2208+-0.0034 and m_s(2 GeV) = 81+-22 MeV. The error on V_us is dominated by experiment, and should be improvable in the future. Nevertheless, already now our result is competitive to the standard extraction of V_us from K_e3 decays, and it is compatible with unitarity.
dc.description4 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/hep-ph/0408044
dc.identifierhttp://arxiv.org/abs/hep-ph/0408044
dc.identifierPhys.Rev.Lett.94:011803,2005
dc.identifierdoi:10.1103/PhysRevLett.94.011803
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177730
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.subjectHigh Energy Physics - Lattice
dc.titleV_us and m_s from hadronic tau decays
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