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|Vus| and ms from hadronic tau decays

AuthorsGámiz, Elvira; Jamin, Matthias; Pich, Antonio ; Prades, Joaquim ; Schwab, Félix
Issue DateJul-2007
CitationNuclear Physics B Proceedings Supplements 169: 85-89 (2007)
AbstractRecent progress in the determination of |Vus| employing strange hadronic τ-decay data are reported. This includes using the recent OPAL update of the strange spectral function, as well as augmenting the dimension-two perturbative contribution with the recently calculated order term on the theory side. These updates result in |Vus|=0.2220±0.0033, with the uncertainty presently being dominated by experiment, and already being competitive with the standard extraction from Ke3 decays and other new proposals to determine |Vus|. In vie of the ongoing work to analyse τ-decay data at the B-factories BaBar and Belle, as well as future results from BESIII, the error on |Vus| from τ decays is expected to be much reduced in the near future.
Description5 páginas.-- Comunicación presentada al 9º International Workshop on Tau Lepton Physics (TAU06) celebrado del 19 al 22 de Septiembre en Pisa (Italia).-- arXiv:hep-ph/0612154v1
Publisher version (URL)http://dx.doi.org/10.1016/j.nuclphysbps.2007.02.053
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