Limit on the pion distribution amplitude

Detalhes bibliográficos
Autor(a) principal: Luna, E. G. S.
Data de Publicação: 2015
Outros Autores: Natale, A. A. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://iopscience.iop.org/article/10.1088/0954-3899/42/1/015003/meta
http://hdl.handle.net/11449/128922
Resumo: The pion distribution amplitude (DA) can be related to the fundamental QCD Green's functions as a function of the quark self- energy and the quark-pion vertex, which in turn are associated with the pion wave function through the Bethe-Salpeter equation. Considering the extreme hard asymptotic behavior in momentum space allowed for a pseudoscalar wave function, which is limited by its normalization condition, we compute the pion DA and its second moment. From the resulting amplitude, representing the field theoretical upper limit on the DA behavior, we calculate the photon-pion transition form factor F-pi gamma gamma*(Q(2)). The resulting upper limit on the pion transition form factor is compared with existing data published by CLEO, BaBar and Belle Collaborations.
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spelling Limit on the pion distribution amplitudeNon-perturbative QCDPion distribution amplitudeHadron physicsThe pion distribution amplitude (DA) can be related to the fundamental QCD Green's functions as a function of the quark self- energy and the quark-pion vertex, which in turn are associated with the pion wave function through the Bethe-Salpeter equation. Considering the extreme hard asymptotic behavior in momentum space allowed for a pseudoscalar wave function, which is limited by its normalization condition, we compute the pion DA and its second moment. From the resulting amplitude, representing the field theoretical upper limit on the DA behavior, we calculate the photon-pion transition form factor F-pi gamma gamma*(Q(2)). The resulting upper limit on the pion transition form factor is compared with existing data published by CLEO, BaBar and Belle Collaborations.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Fundacao de Amparo à Pesquisa do Estado do Rio Grande do Sul (FAPERGS)Universidade Federal do Rio Grande do Sul (UFRGS), Instituto de Física, BR-91501970 Porto Alegre, RS, BrasilUniversidade Federal do ABC (UFABC), Centro de Ciâncias Naturais e Humanas, BR-09210170 Santo André, SP, BrasilUniversidade Estadual Paulista (UNESP), Instituto de Física Teórica (IFT), BR-01140070 São Paulo, SP, BrasilUniversidade Estadual Paulista (UNESP), Instituto de Física Teórica (IFT), BR-01140070 São Paulo, SP, BrasilFAPESP: 2013/22079-8Iop Publishing LtdUniversidade Federal do Rio Grande do Sul (UFRGS)Universidade Federal do ABC (UFABC)Universidade Estadual Paulista (Unesp)Luna, E. G. S.Natale, A. A. [UNESP]2015-10-21T13:15:40Z2015-10-21T13:15:40Z2015-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1-11application/pdfhttp://iopscience.iop.org/article/10.1088/0954-3899/42/1/015003/metaJournal Of Physics G-nuclear And Particle Physics. Bristol: Iop Publishing Ltd, v. 42, n. 1, p. 1-11, 2015.0954-3899http://hdl.handle.net/11449/12892210.1088/0954-3899/42/1/015003WOS:000348130000004WOS000348130000004.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal Of Physics G-nuclear And Particle Physics3.4561,513info:eu-repo/semantics/openAccess2023-10-14T06:02:45Zoai:repositorio.unesp.br:11449/128922Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:50:38.162780Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Limit on the pion distribution amplitude
title Limit on the pion distribution amplitude
spellingShingle Limit on the pion distribution amplitude
Luna, E. G. S.
Non-perturbative QCD
Pion distribution amplitude
Hadron physics
title_short Limit on the pion distribution amplitude
title_full Limit on the pion distribution amplitude
title_fullStr Limit on the pion distribution amplitude
title_full_unstemmed Limit on the pion distribution amplitude
title_sort Limit on the pion distribution amplitude
author Luna, E. G. S.
author_facet Luna, E. G. S.
Natale, A. A. [UNESP]
author_role author
author2 Natale, A. A. [UNESP]
author2_role author
dc.contributor.none.fl_str_mv Universidade Federal do Rio Grande do Sul (UFRGS)
Universidade Federal do ABC (UFABC)
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Luna, E. G. S.
Natale, A. A. [UNESP]
dc.subject.por.fl_str_mv Non-perturbative QCD
Pion distribution amplitude
Hadron physics
topic Non-perturbative QCD
Pion distribution amplitude
Hadron physics
description The pion distribution amplitude (DA) can be related to the fundamental QCD Green's functions as a function of the quark self- energy and the quark-pion vertex, which in turn are associated with the pion wave function through the Bethe-Salpeter equation. Considering the extreme hard asymptotic behavior in momentum space allowed for a pseudoscalar wave function, which is limited by its normalization condition, we compute the pion DA and its second moment. From the resulting amplitude, representing the field theoretical upper limit on the DA behavior, we calculate the photon-pion transition form factor F-pi gamma gamma*(Q(2)). The resulting upper limit on the pion transition form factor is compared with existing data published by CLEO, BaBar and Belle Collaborations.
publishDate 2015
dc.date.none.fl_str_mv 2015-10-21T13:15:40Z
2015-10-21T13:15:40Z
2015-01-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://iopscience.iop.org/article/10.1088/0954-3899/42/1/015003/meta
Journal Of Physics G-nuclear And Particle Physics. Bristol: Iop Publishing Ltd, v. 42, n. 1, p. 1-11, 2015.
0954-3899
http://hdl.handle.net/11449/128922
10.1088/0954-3899/42/1/015003
WOS:000348130000004
WOS000348130000004.pdf
url http://iopscience.iop.org/article/10.1088/0954-3899/42/1/015003/meta
http://hdl.handle.net/11449/128922
identifier_str_mv Journal Of Physics G-nuclear And Particle Physics. Bristol: Iop Publishing Ltd, v. 42, n. 1, p. 1-11, 2015.
0954-3899
10.1088/0954-3899/42/1/015003
WOS:000348130000004
WOS000348130000004.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal Of Physics G-nuclear And Particle Physics
3.456
1,513
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1-11
application/pdf
dc.publisher.none.fl_str_mv Iop Publishing Ltd
publisher.none.fl_str_mv Iop Publishing Ltd
dc.source.none.fl_str_mv Web of Science
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_ 1808128424361852928

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