$|V_us|$ and $m_s$ from hadronic tau decays

Recent progress in the determination of |V_us| employing strange hadronic tau-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 alpha_s^3 term on t...

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Detalles Bibliográficos
Autores principales: Gamiz, Elvira, Jamin, Matthias, Pich, Antonio, Prades, Joaquim, Schwab, Felix
Lenguaje:eng
Publicado: 2006
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/j.nuclphysbps.2007.02.053
http://cds.cern.ch/record/1004918
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author Gamiz, Elvira
Jamin, Matthias
Pich, Antonio
Prades, Joaquim
Schwab, Felix
author_facet Gamiz, Elvira
Jamin, Matthias
Pich, Antonio
Prades, Joaquim
Schwab, Felix
author_sort Gamiz, Elvira
collection CERN
description Recent progress in the determination of |V_us| employing strange hadronic tau-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 alpha_s^3 term on the theory side. These updates result in |V_us| = 0.2220 +- 0.0033, with the uncertainty presently being dominated by experiment, and already being competitive with the standard extraction from K_e3 decays and other new proposals to determine |V_us|. In view of the ongoing work to analyse tau-decay data at the B-factories BaBar and Belle, as well as future results from BESIII, the error on |V_us| from tau decays is expected to be much reduced in the near future.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2006
record_format invenio
spelling cern-10049182023-03-12T04:34:06Zdoi:10.1016/j.nuclphysbps.2007.02.053http://cds.cern.ch/record/1004918engGamiz, ElviraJamin, MatthiasPich, AntonioPrades, JoaquimSchwab, Felix$|V_us|$ and $m_s$ from hadronic tau decaysParticle Physics - PhenomenologyRecent progress in the determination of |V_us| employing strange hadronic tau-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 alpha_s^3 term on the theory side. These updates result in |V_us| = 0.2220 +- 0.0033, with the uncertainty presently being dominated by experiment, and already being competitive with the standard extraction from K_e3 decays and other new proposals to determine |V_us|. In view of the ongoing work to analyse tau-decay data at the B-factories BaBar and Belle, as well as future results from BESIII, the error on |V_us| from tau decays is expected to be much reduced in the near future.Recent progress in the determination of |V_us| employing strange hadronic tau-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 alpha_s^3 term on the theory side. These updates result in |V_us| = 0.2220 +- 0.0033, with the uncertainty presently being dominated by experiment, and already being competitive with the standard extraction from K_e3 decays and other new proposals to determine |V_us|. In view of the ongoing work to analyse tau-decay data at the B-factories BaBar and Belle, as well as future results from BESIII, the error on |V_us| from tau decays is expected to be much reduced in the near future.hep-ph/0612154CERN-PH-TH-2006-254UAB-FT-620CERN-PH-TH-2006-254UAB-FT-620oai:cds.cern.ch:10049182006-12-12
spellingShingle Particle Physics - Phenomenology
Gamiz, Elvira
Jamin, Matthias
Pich, Antonio
Prades, Joaquim
Schwab, Felix
$|V_us|$ and $m_s$ from hadronic tau decays
title $|V_us|$ and $m_s$ from hadronic tau decays
title_full $|V_us|$ and $m_s$ from hadronic tau decays
title_fullStr $|V_us|$ and $m_s$ from hadronic tau decays
title_full_unstemmed $|V_us|$ and $m_s$ from hadronic tau decays
title_short $|V_us|$ and $m_s$ from hadronic tau decays
title_sort $|v_us|$ and $m_s$ from hadronic tau decays
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/j.nuclphysbps.2007.02.053
http://cds.cern.ch/record/1004918
work_keys_str_mv AT gamizelvira vusandmsfromhadronictaudecays
AT jaminmatthias vusandmsfromhadronictaudecays
AT pichantonio vusandmsfromhadronictaudecays
AT pradesjoaquim vusandmsfromhadronictaudecays
AT schwabfelix vusandmsfromhadronictaudecays

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