Crossing symmetry and phenomenological widths in effective Lagrangian models of the pion photoproduction process

5 pags., 3 figs., 1 tab. -- PACS: 13.60.Le; 25.20.Lj

Detalhes bibliográficos
Autores: Fernández-Ramírez, César, Moya de Guerra, Elvira, Udías, J.M.
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2008
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/248140
Acesso em linha:http://hdl.handle.net/10261/248140
Access Level:acceso abierto
Palavra-chave:Crossing symmetry
Phenomenological width
Pion photoproduction
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spelling Crossing symmetry and phenomenological widths in effective Lagrangian models of the pion photoproduction processFernández-Ramírez, CésarMoya de Guerra, ElviraUdías, J.M.Crossing symmetryPhenomenological widthPion photoproduction5 pags., 3 figs., 1 tab. -- PACS: 13.60.Le; 25.20.LjWe investigate the importance of crossing symmetry in effective field models and the effects of phenomenological nucleon resonance widths on the paradigmatic case of pion photoproduction. We use reaction models containing four star resonances up to 1.8 GeV (Δ(1232), N(1440), N(1520), N(1535), Δ(1620), N(1650), Δ(1700), and N(1720)) with different prescriptions for crossed terms and widths, to fit the latest world database on pion photoproduction. We compare χ2 results from selected multipoles and fits. The χ2 is highly dependent on the fulfillment of crossing symmetry and the inclusion of u channels. © 2008 Elsevier B.V. All rights reserved.This work has been supported in part under contracts FIS2005-00640, FPA2006-07393, and FPA2007-62216 of Ministerio de Educación y Ciencia (Spain) and by UCM and Comunidad de Madrid under project number 910059 (Grupo deFísica Nuclear). The computations of this work were carriedout at the “Cluster de Cálculo de Alta Capacidad para Técnicas Físicas” partly funded by EU Commission under FEDER programme and by Universidad Complutense de Madrid (Spain).Elsevier BVMinisterio de Educación y Ciencia (España)Universidad Complutense de MadridComunidad de MadridConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2021202120082021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/248140reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#MEC/FIS2005-00640MEC/FPA2006-07393MEC/FPA2007-62216http://dx.doi.org/10.1016/j.physletb.2007.11.099Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2481402026-05-22T06:33:51Z
dc.title.none.fl_str_mv Crossing symmetry and phenomenological widths in effective Lagrangian models of the pion photoproduction process
title Crossing symmetry and phenomenological widths in effective Lagrangian models of the pion photoproduction process
spellingShingle Crossing symmetry and phenomenological widths in effective Lagrangian models of the pion photoproduction process
Fernández-Ramírez, César
Crossing symmetry
Phenomenological width
Pion photoproduction
title_short Crossing symmetry and phenomenological widths in effective Lagrangian models of the pion photoproduction process
title_full Crossing symmetry and phenomenological widths in effective Lagrangian models of the pion photoproduction process
title_fullStr Crossing symmetry and phenomenological widths in effective Lagrangian models of the pion photoproduction process
title_full_unstemmed Crossing symmetry and phenomenological widths in effective Lagrangian models of the pion photoproduction process
title_sort Crossing symmetry and phenomenological widths in effective Lagrangian models of the pion photoproduction process
dc.creator.none.fl_str_mv Fernández-Ramírez, César
Moya de Guerra, Elvira
Udías, J.M.
author Fernández-Ramírez, César
author_facet Fernández-Ramírez, César
Moya de Guerra, Elvira
Udías, J.M.
author_role author
author2 Moya de Guerra, Elvira
Udías, J.M.
author2_role author
author
dc.contributor.none.fl_str_mv Ministerio de Educación y Ciencia (España)
Universidad Complutense de Madrid
Comunidad de Madrid
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Crossing symmetry
Phenomenological width
Pion photoproduction
topic Crossing symmetry
Phenomenological width
Pion photoproduction
description 5 pags., 3 figs., 1 tab. -- PACS: 13.60.Le; 25.20.Lj
publishDate 2008
dc.date.none.fl_str_mv 2008
2021
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/248140
url http://hdl.handle.net/10261/248140
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
MEC/FIS2005-00640
MEC/FPA2006-07393
MEC/FPA2007-62216
http://dx.doi.org/10.1016/j.physletb.2007.11.099
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier BV
publisher.none.fl_str_mv Elsevier BV
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
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score 15.812429

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