Mostrar el registro sencillo del ítem
dc.contributor.author
Quirós, J .J.
dc.contributor.author
Barbero, César Alberto
dc.contributor.author
Jaramillo, D. E.
dc.contributor.author
Mariano, Alejandro Edgardo
dc.date.available
2018-08-07T14:58:38Z
dc.date.issued
2017-03
dc.identifier.citation
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
dc.identifier.issn
0954-3899
dc.identifier.uri
http://hdl.handle.net/11336/54410
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
IOP Publishing
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Effective Lagrangian Approach
dc.subject
Resonances
dc.subject
Π-Photoproduction
dc.subject.classification
Astronomía
dc.subject.classification
Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Different vertex parameterizations and propagators for the Δ contribution in π-photoproduction
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-06-25T16:13:42Z
dc.journal.volume
44
dc.journal.number
4
dc.journal.pagination
1-12
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Quirós, J .J.. Universidad de Antioquia; Colombia
dc.description.fil
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
dc.description.fil
Fil: Jaramillo, D. E.. Universidad de Antioquia; Colombia
dc.description.fil
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
dc.journal.title
Journal Of Physics G-nuclear And Particle Physics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1088/1361-6471/aa5eec
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/1361-6471/aa5eec/meta
Archivos asociados