Pole Approximation for pion electromagnetic form factor within light-front dynamics

Detalhes bibliográficos
Autor(a) principal: De Melo, J. P.B.C. [UNESP]
Data de Publicação: 2007
Outros Autores: Veiga, J. S., Frederico, T., Pace, E., Salmé, G.
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1142/9789812708267_0064
http://hdl.handle.net/11449/227403
Resumo: We carefully investigate the reliability of the propagator Pole Approximation, i.e. the approximation of retaining only the propagator poles in the evaluation of the Mandelstam covariant expression for the electromagnetic current of the pion. Different frames are analyzed, in order to find the most suitable one for calculating the pion form factor within the proposed approximation. It turns out that the approximation is more accurate in the frame where q+ is maximal. The relevance of the Pole Approximation is briefly discussed in view of calculations of hadron form factors based on wave functions generated by dynamical models.
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spelling Pole Approximation for pion electromagnetic form factor within light-front dynamicsElectromagnetic form factorLight-frontQuark modelWe carefully investigate the reliability of the propagator Pole Approximation, i.e. the approximation of retaining only the propagator poles in the evaluation of the Mandelstam covariant expression for the electromagnetic current of the pion. Different frames are analyzed, in order to find the most suitable one for calculating the pion form factor within the proposed approximation. It turns out that the approximation is more accurate in the frame where q+ is maximal. The relevance of the Pole Approximation is briefly discussed in view of calculations of hadron form factors based on wave functions generated by dynamical models.Centro de Ciências Exatas e Tecnológicas Universidade Cruzeiro Do sul, 08060-070, São Paulo, SPInstituto de Física Teórica Universidade Estadual Paulista, 01405-900, São Paulo, SPDepartamento de Física Instituto Tecnólogico de AeronáUtica, 12228-900, São José dos Campos, SPDipartimento di Fisica Università di Roma Tor Vergata Istituto Nazionale di Fisica Nucleare Sezione Tor Vergata, Via della Ricerca Scientifica 1, I-00133, RomaIstituto Nazionale di Fisica Nucleare Sezione Roma I, P.le A. Moro 2, I-00185, RomaInstituto de Física Teórica Universidade Estadual Paulista, 01405-900, São Paulo, SPUniversidade Cruzeiro Do sulUniversidade Estadual Paulista (UNESP)Instituto Tecnólogico de AeronáUticaSezione Tor VergataSezione Roma IDe Melo, J. P.B.C. [UNESP]Veiga, J. S.Frederico, T.Pace, E.Salmé, G.2022-04-29T07:13:10Z2022-04-29T07:13:10Z2007-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject525-531http://dx.doi.org/10.1142/9789812708267_0064Proceedings of the Conference on Continuous Advances in QCD 2006, p. 525-531.http://hdl.handle.net/11449/22740310.1142/9789812708267_00642-s2.0-84891060112Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengProceedings of the Conference on Continuous Advances in QCD 2006info:eu-repo/semantics/openAccess2022-04-29T07:13:10Zoai:repositorio.unesp.br:11449/227403Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-29T07:13:10Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Pole Approximation for pion electromagnetic form factor within light-front dynamics
title Pole Approximation for pion electromagnetic form factor within light-front dynamics
spellingShingle Pole Approximation for pion electromagnetic form factor within light-front dynamics
De Melo, J. P.B.C. [UNESP]
Electromagnetic form factor
Light-front
Quark model
title_short Pole Approximation for pion electromagnetic form factor within light-front dynamics
title_full Pole Approximation for pion electromagnetic form factor within light-front dynamics
title_fullStr Pole Approximation for pion electromagnetic form factor within light-front dynamics
title_full_unstemmed Pole Approximation for pion electromagnetic form factor within light-front dynamics
title_sort Pole Approximation for pion electromagnetic form factor within light-front dynamics
author De Melo, J. P.B.C. [UNESP]
author_facet De Melo, J. P.B.C. [UNESP]
Veiga, J. S.
Frederico, T.
Pace, E.
Salmé, G.
author_role author
author2 Veiga, J. S.
Frederico, T.
Pace, E.
Salmé, G.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Cruzeiro Do sul
Universidade Estadual Paulista (UNESP)
Instituto Tecnólogico de AeronáUtica
Sezione Tor Vergata
Sezione Roma I
dc.contributor.author.fl_str_mv De Melo, J. P.B.C. [UNESP]
Veiga, J. S.
Frederico, T.
Pace, E.
Salmé, G.
dc.subject.por.fl_str_mv Electromagnetic form factor
Light-front
Quark model
topic Electromagnetic form factor
Light-front
Quark model
description We carefully investigate the reliability of the propagator Pole Approximation, i.e. the approximation of retaining only the propagator poles in the evaluation of the Mandelstam covariant expression for the electromagnetic current of the pion. Different frames are analyzed, in order to find the most suitable one for calculating the pion form factor within the proposed approximation. It turns out that the approximation is more accurate in the frame where q+ is maximal. The relevance of the Pole Approximation is briefly discussed in view of calculations of hadron form factors based on wave functions generated by dynamical models.
publishDate 2007
dc.date.none.fl_str_mv 2007-01-01
2022-04-29T07:13:10Z
2022-04-29T07:13:10Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1142/9789812708267_0064
Proceedings of the Conference on Continuous Advances in QCD 2006, p. 525-531.
http://hdl.handle.net/11449/227403
10.1142/9789812708267_0064
2-s2.0-84891060112
url http://dx.doi.org/10.1142/9789812708267_0064
http://hdl.handle.net/11449/227403
identifier_str_mv Proceedings of the Conference on Continuous Advances in QCD 2006, p. 525-531.
10.1142/9789812708267_0064
2-s2.0-84891060112
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Proceedings of the Conference on Continuous Advances in QCD 2006
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 525-531
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1803047055940124672

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