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Título: | Extraction of ms and |Vus| from Hadronic Tau Decays |
Autor: | Gámiz, Elvira; Jamin, Matthias; Pich, Antonio CSIC ORCID; Prades, Joaquim; Schwab, Félix | Fecha de publicación: | jul-2005 | Editor: | Elsevier | Citación: | Nuclear Physics B Proceedings Supplements 144: 59-64 (2005) | Resumen: | We review recent work to determine the strange quark mass ms as well as the proposal to determine |Vus| using hadronic τ decay data. The recent update of the strange spectral function by OPAL and their moments of the invariant mass distribution are employed. Our results are |Vus|=0.2208±0.0034 and ms(2GeV)=81±22 MeV. Our result is already competitive to the standard extraction of |Vus| from Ke3 decays and to the new proposals to determine it. The error on |Vus| is dominated by experiment and will be eventually much improved by the B-factories hadronic τ data. Ultimately, a simultaneous fit to both ms and |Vus| to a set of moments of the hadronic τ decays invariant mass distribution will provide one of the most accurate determinations of these Standard Model parameters. | Descripción: | 6 páginas, 2 tablas.-- Comunicación presentada al Congreso TAU04 celebrado del 14 al 17 de Septiembre de 2004 en Nara (Japón).-- arXiv:hep-ph/0411278v1 | Versión del editor: | http://dx.doi.org/10.1016/j.nuclphysbps.2005.02.008 | URI: | http://hdl.handle.net/10261/33099 | DOI: | 10.1016/j.nuclphysbps.2005.02.008 | ISSN: | 0920-5632 |
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