Different vertex parameterizations and propagators for the Δ contribution in π-photoproduction

Autores
Quirós, J .J.; Barbero, César Alberto; Jaramillo, D. E.; Mariano, Alejandro Edgardo
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We evaluate the total cross section for the π-photoproduction process and analyze the behavior of the Δ(1232) resonance contribution when the photon energy is increased from threshold up to 0.7 GeV. Within this energy range we compare two different parameterizations for the γNΔ vertex: the normal parity and the covariant multipole decomposition ones. For completeness, we also compare different versions for the Δ propagator: the first is the dressed propagator obtained including one-loop self-energy contributions (EXACT), the second is the complex mass scheme which consists in replacing mΔ → mΔ - iΩΔ/2 in the bare propagator, and the third is an intermediate approximation between the two previous ones (EXCMS). We conclude that, in order to extend the present calculation to include more energetic resonances in the future and to obtain non-divergent results for the total cross section we will need to use the MD parametrization and the EXCMS propagator.
Fil: Quirós, J .J.. Universidad de Antioquia; Colombia
Fil: Barbero, César Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; Argentina
Fil: Jaramillo, D. E.. Universidad de Antioquia; Colombia
Fil: Mariano, Alejandro Edgardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; Argentina
Materia
EFFECTIVE LAGRANGIAN APPROACH
RESONANCES
Π-PHOTOPRODUCTION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/54410
Acceder
id CONICETDig_f0d9b3e3f6e0c6b3b911e37710406ba5
oai_identifier_str oai:ri.conicet.gov.ar:11336/54410
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Different vertex parameterizations and propagators for the Δ contribution in π-photoproductionQuirós, J .J.Barbero, César AlbertoJaramillo, D. E.Mariano, Alejandro EdgardoEFFECTIVE LAGRANGIAN APPROACHRESONANCESΠ-PHOTOPRODUCTIONhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We evaluate the total cross section for the π-photoproduction process and analyze the behavior of the Δ(1232) resonance contribution when the photon energy is increased from threshold up to 0.7 GeV. Within this energy range we compare two different parameterizations for the γNΔ vertex: the normal parity and the covariant multipole decomposition ones. For completeness, we also compare different versions for the Δ propagator: the first is the dressed propagator obtained including one-loop self-energy contributions (EXACT), the second is the complex mass scheme which consists in replacing mΔ → mΔ - iΩΔ/2 in the bare propagator, and the third is an intermediate approximation between the two previous ones (EXCMS). We conclude that, in order to extend the present calculation to include more energetic resonances in the future and to obtain non-divergent results for the total cross section we will need to use the MD parametrization and the EXCMS propagator.Fil: Quirós, J .J.. Universidad de Antioquia; ColombiaFil: Barbero, César Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; ArgentinaFil: Jaramillo, D. E.. Universidad de Antioquia; ColombiaFil: Mariano, Alejandro Edgardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; ArgentinaIOP Publishing2017-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/54410Quirós, J .J.; Barbero, César Alberto; Jaramillo, D. E.; Mariano, Alejandro Edgardo; Different vertex parameterizations and propagators for the Δ contribution in π-photoproduction; IOP Publishing; Journal Of Physics G-nuclear And Particle Physics; 44; 4; 3-2017; 1-120954-3899CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1088/1361-6471/aa5eecinfo:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/1361-6471/aa5eec/metainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:26:55Zoai:ri.conicet.gov.ar:11336/54410instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:26:55.967CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Different vertex parameterizations and propagators for the Δ contribution in π-photoproduction
title Different vertex parameterizations and propagators for the Δ contribution in π-photoproduction
spellingShingle Different vertex parameterizations and propagators for the Δ contribution in π-photoproduction
Quirós, J .J.
EFFECTIVE LAGRANGIAN APPROACH
RESONANCES
Π-PHOTOPRODUCTION
title_short Different vertex parameterizations and propagators for the Δ contribution in π-photoproduction
title_full Different vertex parameterizations and propagators for the Δ contribution in π-photoproduction
title_fullStr Different vertex parameterizations and propagators for the Δ contribution in π-photoproduction
title_full_unstemmed Different vertex parameterizations and propagators for the Δ contribution in π-photoproduction
title_sort Different vertex parameterizations and propagators for the Δ contribution in π-photoproduction
dc.creator.none.fl_str_mv Quirós, J .J.
Barbero, César Alberto
Jaramillo, D. E.
Mariano, Alejandro Edgardo
author Quirós, J .J.
author_facet Quirós, J .J.
Barbero, César Alberto
Jaramillo, D. E.
Mariano, Alejandro Edgardo
author_role author
author2 Barbero, César Alberto
Jaramillo, D. E.
Mariano, Alejandro Edgardo
author2_role author
author
author
dc.subject.none.fl_str_mv EFFECTIVE LAGRANGIAN APPROACH
RESONANCES
Π-PHOTOPRODUCTION
topic EFFECTIVE LAGRANGIAN APPROACH
RESONANCES
Π-PHOTOPRODUCTION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We evaluate the total cross section for the π-photoproduction process and analyze the behavior of the Δ(1232) resonance contribution when the photon energy is increased from threshold up to 0.7 GeV. Within this energy range we compare two different parameterizations for the γNΔ vertex: the normal parity and the covariant multipole decomposition ones. For completeness, we also compare different versions for the Δ propagator: the first is the dressed propagator obtained including one-loop self-energy contributions (EXACT), the second is the complex mass scheme which consists in replacing mΔ → mΔ - iΩΔ/2 in the bare propagator, and the third is an intermediate approximation between the two previous ones (EXCMS). We conclude that, in order to extend the present calculation to include more energetic resonances in the future and to obtain non-divergent results for the total cross section we will need to use the MD parametrization and the EXCMS propagator.
Fil: Quirós, J .J.. Universidad de Antioquia; Colombia
Fil: Barbero, César Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; Argentina
Fil: Jaramillo, D. E.. Universidad de Antioquia; Colombia
Fil: Mariano, Alejandro Edgardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; Argentina
description We evaluate the total cross section for the π-photoproduction process and analyze the behavior of the Δ(1232) resonance contribution when the photon energy is increased from threshold up to 0.7 GeV. Within this energy range we compare two different parameterizations for the γNΔ vertex: the normal parity and the covariant multipole decomposition ones. For completeness, we also compare different versions for the Δ propagator: the first is the dressed propagator obtained including one-loop self-energy contributions (EXACT), the second is the complex mass scheme which consists in replacing mΔ → mΔ - iΩΔ/2 in the bare propagator, and the third is an intermediate approximation between the two previous ones (EXCMS). We conclude that, in order to extend the present calculation to include more energetic resonances in the future and to obtain non-divergent results for the total cross section we will need to use the MD parametrization and the EXCMS propagator.
publishDate 2017
dc.date.none.fl_str_mv 2017-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/54410
Quirós, J .J.; Barbero, César Alberto; Jaramillo, D. E.; Mariano, Alejandro Edgardo; Different vertex parameterizations and propagators for the Δ contribution in π-photoproduction; IOP Publishing; Journal Of Physics G-nuclear And Particle Physics; 44; 4; 3-2017; 1-12
0954-3899
CONICET Digital
CONICET
url http://hdl.handle.net/11336/54410
identifier_str_mv Quirós, J .J.; Barbero, César Alberto; Jaramillo, D. E.; Mariano, Alejandro Edgardo; Different vertex parameterizations and propagators for the Δ contribution in π-photoproduction; IOP Publishing; Journal Of Physics G-nuclear And Particle Physics; 44; 4; 3-2017; 1-12
0954-3899
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/1361-6471/aa5eec
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/1361-6471/aa5eec/meta
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846083411858423808
score 13.22299

Publicaciones similares