Final state interactions effects on kinetic energy sum spectra in nonmesonic weak decay

Autores
Barbero, César Alberto; Mariano, Alejandro Edgardo; Duarte, S. B.
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We analyze the effect of final state interactions (FSI) on coincidence spectra in nonmesonic hypernuclear weak decay, ΛN → nN, as a function of the kinetic energy sum, EnN = En +EN, both for np and nn events. Adopting a formalism recently developed, the effects of FSI originated from the interaction between the outgoing nucleons and those in the residual core are included analytically in a very simple way within the eikonal approximation through the modification of the emerging particles momenta. Numerical results are shown for 5 Λ He and 12 Λ C hypernucleus. We found that coincidence spectra are only slightly modified and the disagreement between theory and experimental data still persists, mainly for nn events in 5 Λ He where enough statistics exists. We conclude that admixtures of excitations in the final state produced by FSI need to be added to our approach in order to improve the agreement with data.
Facultad de Ciencias Exactas
Materia
Física
Final state interactions
Hypernuclei
Sum spectra
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/82489
Acceder
id SEDICI_a2e83d8fd2bd24cbe2b96e65a42724f1
oai_identifier_str oai:sedici.unlp.edu.ar:10915/82489
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Final state interactions effects on kinetic energy sum spectra in nonmesonic weak decayBarbero, César AlbertoMariano, Alejandro EdgardoDuarte, S. B.FísicaFinal state interactionsHypernucleiSum spectraWe analyze the effect of final state interactions (FSI) on coincidence spectra in nonmesonic hypernuclear weak decay, ΛN → nN, as a function of the kinetic energy sum, EnN = En +EN, both for np and nn events. Adopting a formalism recently developed, the effects of FSI originated from the interaction between the outgoing nucleons and those in the residual core are included analytically in a very simple way within the eikonal approximation through the modification of the emerging particles momenta. Numerical results are shown for 5 Λ He and 12 Λ C hypernucleus. We found that coincidence spectra are only slightly modified and the disagreement between theory and experimental data still persists, mainly for nn events in 5 Λ He where enough statistics exists. We conclude that admixtures of excitations in the final state produced by FSI need to be added to our approach in order to improve the agreement with data.Facultad de Ciencias Exactas2010info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf309-314http://sedici.unlp.edu.ar/handle/10915/82489enginfo:eu-repo/semantics/altIdentifier/issn/0103-9733info:eu-repo/semantics/altIdentifier/doi/10.1590/S0103-97332010000300009info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-29T15:20:34Zoai:sedici.unlp.edu.ar:10915/82489Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-29 15:20:35.036SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Final state interactions effects on kinetic energy sum spectra in nonmesonic weak decay
title Final state interactions effects on kinetic energy sum spectra in nonmesonic weak decay
spellingShingle Final state interactions effects on kinetic energy sum spectra in nonmesonic weak decay
Barbero, César Alberto
Física
Final state interactions
Hypernuclei
Sum spectra
title_short Final state interactions effects on kinetic energy sum spectra in nonmesonic weak decay
title_full Final state interactions effects on kinetic energy sum spectra in nonmesonic weak decay
title_fullStr Final state interactions effects on kinetic energy sum spectra in nonmesonic weak decay
title_full_unstemmed Final state interactions effects on kinetic energy sum spectra in nonmesonic weak decay
title_sort Final state interactions effects on kinetic energy sum spectra in nonmesonic weak decay
dc.creator.none.fl_str_mv Barbero, César Alberto
Mariano, Alejandro Edgardo
Duarte, S. B.
author Barbero, César Alberto
author_facet Barbero, César Alberto
Mariano, Alejandro Edgardo
Duarte, S. B.
author_role author
author2 Mariano, Alejandro Edgardo
Duarte, S. B.
author2_role author
author
dc.subject.none.fl_str_mv Física
Final state interactions
Hypernuclei
Sum spectra
topic Física
Final state interactions
Hypernuclei
Sum spectra
dc.description.none.fl_txt_mv We analyze the effect of final state interactions (FSI) on coincidence spectra in nonmesonic hypernuclear weak decay, ΛN → nN, as a function of the kinetic energy sum, EnN = En +EN, both for np and nn events. Adopting a formalism recently developed, the effects of FSI originated from the interaction between the outgoing nucleons and those in the residual core are included analytically in a very simple way within the eikonal approximation through the modification of the emerging particles momenta. Numerical results are shown for 5 Λ He and 12 Λ C hypernucleus. We found that coincidence spectra are only slightly modified and the disagreement between theory and experimental data still persists, mainly for nn events in 5 Λ He where enough statistics exists. We conclude that admixtures of excitations in the final state produced by FSI need to be added to our approach in order to improve the agreement with data.
Facultad de Ciencias Exactas
description We analyze the effect of final state interactions (FSI) on coincidence spectra in nonmesonic hypernuclear weak decay, ΛN → nN, as a function of the kinetic energy sum, EnN = En +EN, both for np and nn events. Adopting a formalism recently developed, the effects of FSI originated from the interaction between the outgoing nucleons and those in the residual core are included analytically in a very simple way within the eikonal approximation through the modification of the emerging particles momenta. Numerical results are shown for 5 Λ He and 12 Λ C hypernucleus. We found that coincidence spectra are only slightly modified and the disagreement between theory and experimental data still persists, mainly for nn events in 5 Λ He where enough statistics exists. We conclude that admixtures of excitations in the final state produced by FSI need to be added to our approach in order to improve the agreement with data.
publishDate 2010
dc.date.none.fl_str_mv 2010
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/82489
url http://sedici.unlp.edu.ar/handle/10915/82489
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0103-9733
info:eu-repo/semantics/altIdentifier/doi/10.1590/S0103-97332010000300009
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
309-314
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
_version_ 1847428165250580480
score 13.10058

Publicaciones similares