Quark mass dependence of the pion vector form factor

We examine the quark mass dependence of the pion vector form factor, particularly the curvature (mean quartic radius). We focus our study on the consequences of assuming that the coupling constant of the ρ to pions, gρππ , is largely independent of the quark mass while the quark mass dependence of t...

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Detalles Bibliográficos
Autores: Llanes Estrada, Felipe José, Feng Kun, Guo, Hanhart, Christoph
Tipo de recurso: artículo
Fecha de publicación:2009
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/43962
Acceso en línea:https://hdl.handle.net/20.500.14352/43962
Access Level:acceso abierto
Palabra clave:53
Pion Form Factor
Omnes Representation
Quark Mass Dependence
Inverse Amplitude Method
Física (Física)
22 Física
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oai_identifier_str oai:docta.ucm.es:20.500.14352/43962
network_acronym_str ES
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repository_id_str
spelling Quark mass dependence of the pion vector form factorLlanes Estrada, Felipe JoséFeng Kun, GuoHanhart, Christoph53Pion Form FactorOmnes RepresentationQuark Mass DependenceInverse Amplitude MethodFísica (Física)22 FísicaWe examine the quark mass dependence of the pion vector form factor, particularly the curvature (mean quartic radius). We focus our study on the consequences of assuming that the coupling constant of the ρ to pions, gρππ , is largely independent of the quark mass while the quark mass dependence of the ρ mass is given by recent lattice data. By employing the Omnès representation we can provide a very clean estimate for a certain combination of the curvature and the square radius, whose quark mass dependence could be determined from lattice computations. This study provides an independent access to the quark mass dependence of the ρππ coupling and in this way a non-trivial check of the systematics of chiral extrapolations. We also provide an improved value for the curvature for hysical values for the quark masses, namely (r(4)) = 0.73±0.09 fm(4) or equivalently c(V) = 4.00±0.50 GeV(−4).Elsevier Science BVUniversidad Complutense de Madrid20092009-07-0620092009-07-06journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://hdl.handle.net/20.500.14352/43962reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/439622026-06-02T12:44:21Z
dc.title.none.fl_str_mv Quark mass dependence of the pion vector form factor
title Quark mass dependence of the pion vector form factor
spellingShingle Quark mass dependence of the pion vector form factor
Llanes Estrada, Felipe José
53
Pion Form Factor
Omnes Representation
Quark Mass Dependence
Inverse Amplitude Method
Física (Física)
22 Física
title_short Quark mass dependence of the pion vector form factor
title_full Quark mass dependence of the pion vector form factor
title_fullStr Quark mass dependence of the pion vector form factor
title_full_unstemmed Quark mass dependence of the pion vector form factor
title_sort Quark mass dependence of the pion vector form factor
dc.creator.none.fl_str_mv Llanes Estrada, Felipe José
Feng Kun, Guo
Hanhart, Christoph
author Llanes Estrada, Felipe José
author_facet Llanes Estrada, Felipe José
Feng Kun, Guo
Hanhart, Christoph
author_role author
author2 Feng Kun, Guo
Hanhart, Christoph
author2_role author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 53
Pion Form Factor
Omnes Representation
Quark Mass Dependence
Inverse Amplitude Method
Física (Física)
22 Física
topic 53
Pion Form Factor
Omnes Representation
Quark Mass Dependence
Inverse Amplitude Method
Física (Física)
22 Física
description We examine the quark mass dependence of the pion vector form factor, particularly the curvature (mean quartic radius). We focus our study on the consequences of assuming that the coupling constant of the ρ to pions, gρππ , is largely independent of the quark mass while the quark mass dependence of the ρ mass is given by recent lattice data. By employing the Omnès representation we can provide a very clean estimate for a certain combination of the curvature and the square radius, whose quark mass dependence could be determined from lattice computations. This study provides an independent access to the quark mass dependence of the ρππ coupling and in this way a non-trivial check of the systematics of chiral extrapolations. We also provide an improved value for the curvature for hysical values for the quark masses, namely (r(4)) = 0.73±0.09 fm(4) or equivalently c(V) = 4.00±0.50 GeV(−4).
publishDate 2009
dc.date.none.fl_str_mv 2009
2009-07-06
2009
2009-07-06
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/20.500.14352/43962
url https://hdl.handle.net/20.500.14352/43962
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
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science BV
publisher.none.fl_str_mv Elsevier Science BV
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
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score 15,301603

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