The < SPP > Green function and SU(3) breaking in Kl3 decays

18 páginas, 1 figura, 1 tabla.-- arXiv:hep-ph/0503108v3

Bibliographic Details
Authors: Cirigliano, Vincenzo, Ecker, Gerhard, Eidemüller, Markus, Kaiser, Roland, Pich, Antonio, Portolés, Jorge
Format: article
Publication Date:2005
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/33087
Online Access:http://hdl.handle.net/10261/33087
Access Level:Open access
Keyword:Chiral lagrangians
1/N Expansion
QCD
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spelling The < SPP > Green function and SU(3) breaking in Kl3 decaysCirigliano, VincenzoEcker, GerhardEidemüller, MarkusKaiser, RolandPich, AntonioPortolés, JorgeChiral lagrangians1/N ExpansionQCD18 páginas, 1 figura, 1 tabla.-- arXiv:hep-ph/0503108v3Using the 1/N_C expansion scheme and truncating the hadronic spectrum to the lowest-lying resonances, we match a meromorphic approximation to the < S P P > Green function onto QCD by imposing the correct large-momentum falloff, both off-shell and on the relevant hadron mass shells. In this way we determine a number of chiral low-energy constants of O(p^6), in particular the ones governing SU(3) breaking in the K_{l3} vector form factor at zero momentum transfer. The main result of our matching procedure is that the known loop contributions largely dominate the corrections of O(p^6) to f_{+}(0). We discuss the implications of our final value f_{+}^{K^0 \pi^-}(0)=0.984 \pm 0.012 for the extraction of V_{us} from K_{l3} decays.Work supported in part by HPRN-CT2002-00311 (EURIDICE) and by Acciones Integradas, HU2002-0044 (MCYT, Spain), Project No. 19/2003 (Austria). V.C. is supported by a Sherman Fairchild Fellowship from Caltech. M.E. thanks the FAPESP (Brazil) for financial support. This work has been supported in part by MCYT (Spain) under Grant FPA2004-00996, by Generalitat Valenciana (Grants GRUPOS03/013 and GV04B-594) and by ERDF funds from the European Commission.Peer reviewedInstitute of Physics Publishing201120112005info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/33087reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1088/1126-6708/2005/04/006info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/330872026-05-22T06:33:51Z
dc.title.none.fl_str_mv The < SPP > Green function and SU(3) breaking in Kl3 decays
title The < SPP > Green function and SU(3) breaking in Kl3 decays
spellingShingle The < SPP > Green function and SU(3) breaking in Kl3 decays
Cirigliano, Vincenzo
Chiral lagrangians
1/N Expansion
QCD
title_short The < SPP > Green function and SU(3) breaking in Kl3 decays
title_full The < SPP > Green function and SU(3) breaking in Kl3 decays
title_fullStr The < SPP > Green function and SU(3) breaking in Kl3 decays
title_full_unstemmed The < SPP > Green function and SU(3) breaking in Kl3 decays
title_sort The < SPP > Green function and SU(3) breaking in Kl3 decays
dc.creator.none.fl_str_mv Cirigliano, Vincenzo
Ecker, Gerhard
Eidemüller, Markus
Kaiser, Roland
Pich, Antonio
Portolés, Jorge
author Cirigliano, Vincenzo
author_facet Cirigliano, Vincenzo
Ecker, Gerhard
Eidemüller, Markus
Kaiser, Roland
Pich, Antonio
Portolés, Jorge
author_role author
author2 Ecker, Gerhard
Eidemüller, Markus
Kaiser, Roland
Pich, Antonio
Portolés, Jorge
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Chiral lagrangians
1/N Expansion
QCD
topic Chiral lagrangians
1/N Expansion
QCD
description 18 páginas, 1 figura, 1 tabla.-- arXiv:hep-ph/0503108v3
publishDate 2005
dc.date.none.fl_str_mv 2005
2011
2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/33087
url http://hdl.handle.net/10261/33087
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1088/1126-6708/2005/04/006
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Institute of Physics Publishing
publisher.none.fl_str_mv Institute of Physics Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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