Investigation of a_(0)-f_(0) mixing

We investigate the isospin-violating mixing of the light scalar mesons a_0(980) and f_0(980) within the unitarized chiral approach. Isospin-violating effects are considered to leading order in the quark mass differences and electromagnetism. In this approach both mesons are generated through meson-m...

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Detalles Bibliográficos
Autores: Hanhart, Christoph, Kubis, Bastian, Peláez Sagredo, José Ramón
Tipo de recurso: artículo
Fecha de publicación:2007
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/51719
Acceso en línea:https://hdl.handle.net/20.500.14352/51719
Access Level:acceso abierto
Palabra clave:51-73
Chiral perturbation-theory
Pion-kaon scattering
Scalar mesons
Isospin violation
Elastic-scattering
Multiquark hadrons
Radiative decays
Virtual photons
Nucleon-nucleon
Threshold
Física-Modelos matemáticos
Física matemática
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spelling Investigation of a_(0)-f_(0) mixingHanhart, ChristophKubis, BastianPeláez Sagredo, José Ramón51-73Chiral perturbation-theoryPion-kaon scatteringScalar mesonsIsospin violationElastic-scatteringMultiquark hadronsRadiative decaysVirtual photonsNucleon-nucleonThresholdFísica-Modelos matemáticosFísica matemáticaWe investigate the isospin-violating mixing of the light scalar mesons a_0(980) and f_0(980) within the unitarized chiral approach. Isospin-violating effects are considered to leading order in the quark mass differences and electromagnetism. In this approach both mesons are generated through meson-meson dynamics. Our results provide a description of the mixing phenomenon within a framework consistent with chiral symmetry and unitarity, where these resonances are not predominantly qq̅ states. Amongst the possible experimental signals, we discuss observable consequences for the reaction J/ ψ→Øπ^0 ɳ in detail. In particular, we demonstrate that he effect of a_(0) –f_(0) mixing is by far the most important isospinbreaking effect in the resonance region and can indeed be extracted from experiment.Amer Physical SocUniversidad Complutense de Madrid20072007-10-0120072007-10-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/51719reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/517192026-06-02T12:44:21Z
dc.title.none.fl_str_mv Investigation of a_(0)-f_(0) mixing
title Investigation of a_(0)-f_(0) mixing
spellingShingle Investigation of a_(0)-f_(0) mixing
Hanhart, Christoph
51-73
Chiral perturbation-theory
Pion-kaon scattering
Scalar mesons
Isospin violation
Elastic-scattering
Multiquark hadrons
Radiative decays
Virtual photons
Nucleon-nucleon
Threshold
Física-Modelos matemáticos
Física matemática
title_short Investigation of a_(0)-f_(0) mixing
title_full Investigation of a_(0)-f_(0) mixing
title_fullStr Investigation of a_(0)-f_(0) mixing
title_full_unstemmed Investigation of a_(0)-f_(0) mixing
title_sort Investigation of a_(0)-f_(0) mixing
dc.creator.none.fl_str_mv Hanhart, Christoph
Kubis, Bastian
Peláez Sagredo, José Ramón
author Hanhart, Christoph
author_facet Hanhart, Christoph
Kubis, Bastian
Peláez Sagredo, José Ramón
author_role author
author2 Kubis, Bastian
Peláez Sagredo, José Ramón
author2_role author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 51-73
Chiral perturbation-theory
Pion-kaon scattering
Scalar mesons
Isospin violation
Elastic-scattering
Multiquark hadrons
Radiative decays
Virtual photons
Nucleon-nucleon
Threshold
Física-Modelos matemáticos
Física matemática
topic 51-73
Chiral perturbation-theory
Pion-kaon scattering
Scalar mesons
Isospin violation
Elastic-scattering
Multiquark hadrons
Radiative decays
Virtual photons
Nucleon-nucleon
Threshold
Física-Modelos matemáticos
Física matemática
description We investigate the isospin-violating mixing of the light scalar mesons a_0(980) and f_0(980) within the unitarized chiral approach. Isospin-violating effects are considered to leading order in the quark mass differences and electromagnetism. In this approach both mesons are generated through meson-meson dynamics. Our results provide a description of the mixing phenomenon within a framework consistent with chiral symmetry and unitarity, where these resonances are not predominantly qq̅ states. Amongst the possible experimental signals, we discuss observable consequences for the reaction J/ ψ→Øπ^0 ɳ in detail. In particular, we demonstrate that he effect of a_(0) –f_(0) mixing is by far the most important isospinbreaking effect in the resonance region and can indeed be extracted from experiment.
publishDate 2007
dc.date.none.fl_str_mv 2007
2007-10-01
2007
2007-10-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/51719
url https://hdl.handle.net/20.500.14352/51719
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Amer Physical Soc
publisher.none.fl_str_mv Amer Physical Soc
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869415648472334336
score 15,301603

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