Form factors in the radiative pion decay

We perform an analysis of the form factors that rule the structure-dependent amplitude in radiative pion decay. The resonance contributions to pion -> e nu_e gamma decays are computed through the proper construction of the vector and axial-vector form factors by setting the QCD driven asymptotic...

Descripción completa

Detalles Bibliográficos
Autores: Mathieu, Vincent, Portolés, Jorge
Tipo de recurso: artículo
Fecha de publicación:2007
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/2736
Acceso en línea:http://hdl.handle.net/10261/2736
Access Level:acceso abierto
Palabra clave:QCD
Chiral lagrangians
Radiative pion decay
id ES_78576afc7b89a246e5585a8d4cf45f48
oai_identifier_str oai:digital.csic.es:10261/2736
network_acronym_str ES
network_name_str España
repository_id_str
spelling Form factors in the radiative pion decayMathieu, VincentPortolés, JorgeQCDChiral lagrangiansRadiative pion decayWe perform an analysis of the form factors that rule the structure-dependent amplitude in radiative pion decay. The resonance contributions to pion -> e nu_e gamma decays are computed through the proper construction of the vector and axial-vector form factors by setting the QCD driven asymptotic properties of the three-point Green functions VVP and VAP, and by demanding the smoothening of the form factors at high transfer of momentum. A comparison between theoretical and experimental determination of the form factors is also carried out. We also consider and evaluate the role played by a non-standard tensor form factor. We conclude that, at present and due to the hadronic uncertainties, the search for new physics in this process is not feasible.Ministerio de Educación y Ciencia, FPA2004-00996. Generalitat Valenciana, GVACOMP2007-156. European Commission, EU MRTN-CT-2006-035482 (FLAVIAnet)-Peer reviewedSpringer Nature200820082007info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501544210 bytesapplication/pdfhttp://hdl.handle.net/10261/2736reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglésinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/27362026-05-22T06:33:51Z
dc.title.none.fl_str_mv Form factors in the radiative pion decay
title Form factors in the radiative pion decay
spellingShingle Form factors in the radiative pion decay
Mathieu, Vincent
QCD
Chiral lagrangians
Radiative pion decay
title_short Form factors in the radiative pion decay
title_full Form factors in the radiative pion decay
title_fullStr Form factors in the radiative pion decay
title_full_unstemmed Form factors in the radiative pion decay
title_sort Form factors in the radiative pion decay
dc.creator.none.fl_str_mv Mathieu, Vincent
Portolés, Jorge
author Mathieu, Vincent
author_facet Mathieu, Vincent
Portolés, Jorge
author_role author
author2 Portolés, Jorge
author2_role author
dc.subject.none.fl_str_mv QCD
Chiral lagrangians
Radiative pion decay
topic QCD
Chiral lagrangians
Radiative pion decay
description We perform an analysis of the form factors that rule the structure-dependent amplitude in radiative pion decay. The resonance contributions to pion -> e nu_e gamma decays are computed through the proper construction of the vector and axial-vector form factors by setting the QCD driven asymptotic properties of the three-point Green functions VVP and VAP, and by demanding the smoothening of the form factors at high transfer of momentum. A comparison between theoretical and experimental determination of the form factors is also carried out. We also consider and evaluate the role played by a non-standard tensor form factor. We conclude that, at present and due to the hadronic uncertainties, the search for new physics in this process is not feasible.
publishDate 2007
dc.date.none.fl_str_mv 2007
2008
2008
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/10261/2736
url http://hdl.handle.net/10261/2736
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 544210 bytes
application/pdf
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
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
_version_ 1869411214813036544
score 15,198674

Similares en LA Referencia