Status of the Hadronic Tau Determination of V_us

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dc.creatorMaltman, K.
dc.creatorWolfe, C. E.
dc.creatorBanerjee, S.
dc.creatorNugent, I.
dc.creatorRoney, J. M.
dc.date2008-07-21
dc.date.accessioned2026-07-07T11:44:57Z
dc.date.available2026-07-07T11:44:57Z
dc.descriptionWe update the extraction of |V_{us}| from hadronic tau decay data in light of recent BaBar and Belle results on the branching fractions of a number of important strange decay modes. A range of sum rule analyses is performed, particular attention being paid to those based on "non-spectral weights", developed previously to bring the slow convergence of the relevant integrated D=2 OPE series under improved control. Results from the various sum rules are shown to be in good agreement with one another, but ~3 sigma below expectations based on 3-family unitarity. Important avenues for future study are briefly discussed.
dc.description9 pages, 2 figures, 1 table. Combined report on talks presented at the 4th International Conference on Flavor Physics, Beijing, China, Sept. 24-28, 2007 and QCD Downunder 2, Auckland, NZ, Jan. 17-19, 2008
dc.identifierhttps://arxiv.org/abs/0807.3195
dc.identifierhttp://arxiv.org/abs/0807.3195
dc.identifierInt.J.Mod.Phys.A23:3191-3195,2008
dc.identifierdoi:10.1142/S0217751X08041803
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201732
dc.subjectHigh Energy Physics - Phenomenology
dc.titleStatus of the Hadronic Tau Determination of V_us
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