The frozen nucleon approximation in two-particle two-hole response functions

We present a fast and efficient method to compute the inclusive two-particle two-hole (2p–2h) electroweak responses in the neutrino and electron quasielastic inclusive cross sections. The method is based on two approximations. The first neglects the motion of the two initial nucleons below the Fermi...

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Detalles Bibliográficos
Autores: Ruiz Simo, I., Amaro Soriano, José Enrique, Barbaro, M. B., Caballero Carretero, Juan Antonio, Megías Vázquez, Guillermo Daniel, Donnelly, T. W.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2017
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/60426
Acceso en línea:http://hdl.handle.net/11441/60426
https://doi.org/10.1016/j.physletb.2017.04.063
Access Level:acceso abierto
Palabra clave:Neutrino scattering
Meson-exchange currents 2p–2h
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spelling The frozen nucleon approximation in two-particle two-hole response functionsRuiz Simo, I.Amaro Soriano, José EnriqueBarbaro, M. B.Caballero Carretero, Juan AntonioMegías Vázquez, Guillermo DanielDonnelly, T. W.Neutrino scatteringMeson-exchange currents 2p–2hWe present a fast and efficient method to compute the inclusive two-particle two-hole (2p–2h) electroweak responses in the neutrino and electron quasielastic inclusive cross sections. The method is based on two approximations. The first neglects the motion of the two initial nucleons below the Fermi momentum, which are considered to be at rest. This approximation, which is reasonable for high values of the momentum transfer, turns out also to be quite good for moderate values of the momentum transfer q kF . The second approximation involves using in the “frozen” meson-exchange currents (MEC) an effective -propagator averaged over the Fermi sea. Within the resulting “frozen nucleon approximation”, the inclusive 2p–2h responses are accurately calculated with only a one-dimensional integral over the emission angle of one of the final nucleons, thus drastically simplifying the calculation and reducing the computational time. The latter makes this method especially well-suited for implementation in Monte Carlo neutrino event generators.España, Ministerio de Economía y Competitividad FIS2014-559386-PEspaña, Ministerio de Economía y Competitividad FIS2014-53448-C2-1España, Junta de Andalucía .FQM-225España, Junta de Andalucía FQM160ElsevierFísica Atómica, Molecular y Nuclear2017info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttp://hdl.handle.net/11441/60426https://doi.org/10.1016/j.physletb.2017.04.063reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésPhysics Letters B, 2017 (770), 193-199.info:eu-repo/grantAgreement/MINECO/FIS2014-559386-P/info:eu-repo/grantAgreement/MINECO/FIS2014-53448-C2-1/FQM-225FQM160http://dx.doi.org/10.1016/j.physletb.2017.04.063info:eu-repo/semantics/openAccessoai:idus.us.es:11441/604262026-06-17T12:51:07Z
dc.title.none.fl_str_mv The frozen nucleon approximation in two-particle two-hole response functions
title The frozen nucleon approximation in two-particle two-hole response functions
spellingShingle The frozen nucleon approximation in two-particle two-hole response functions
Ruiz Simo, I.
Neutrino scattering
Meson-exchange currents 2p–2h
title_short The frozen nucleon approximation in two-particle two-hole response functions
title_full The frozen nucleon approximation in two-particle two-hole response functions
title_fullStr The frozen nucleon approximation in two-particle two-hole response functions
title_full_unstemmed The frozen nucleon approximation in two-particle two-hole response functions
title_sort The frozen nucleon approximation in two-particle two-hole response functions
dc.creator.none.fl_str_mv Ruiz Simo, I.
Amaro Soriano, José Enrique
Barbaro, M. B.
Caballero Carretero, Juan Antonio
Megías Vázquez, Guillermo Daniel
Donnelly, T. W.
author Ruiz Simo, I.
author_facet Ruiz Simo, I.
Amaro Soriano, José Enrique
Barbaro, M. B.
Caballero Carretero, Juan Antonio
Megías Vázquez, Guillermo Daniel
Donnelly, T. W.
author_role author
author2 Amaro Soriano, José Enrique
Barbaro, M. B.
Caballero Carretero, Juan Antonio
Megías Vázquez, Guillermo Daniel
Donnelly, T. W.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Física Atómica, Molecular y Nuclear
dc.subject.none.fl_str_mv Neutrino scattering
Meson-exchange currents 2p–2h
topic Neutrino scattering
Meson-exchange currents 2p–2h
description We present a fast and efficient method to compute the inclusive two-particle two-hole (2p–2h) electroweak responses in the neutrino and electron quasielastic inclusive cross sections. The method is based on two approximations. The first neglects the motion of the two initial nucleons below the Fermi momentum, which are considered to be at rest. This approximation, which is reasonable for high values of the momentum transfer, turns out also to be quite good for moderate values of the momentum transfer q kF . The second approximation involves using in the “frozen” meson-exchange currents (MEC) an effective -propagator averaged over the Fermi sea. Within the resulting “frozen nucleon approximation”, the inclusive 2p–2h responses are accurately calculated with only a one-dimensional integral over the emission angle of one of the final nucleons, thus drastically simplifying the calculation and reducing the computational time. The latter makes this method especially well-suited for implementation in Monte Carlo neutrino event generators.
publishDate 2017
dc.date.none.fl_str_mv 2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11441/60426
https://doi.org/10.1016/j.physletb.2017.04.063
url http://hdl.handle.net/11441/60426
https://doi.org/10.1016/j.physletb.2017.04.063
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Physics Letters B, 2017 (770), 193-199.
info:eu-repo/grantAgreement/MINECO/FIS2014-559386-P/
info:eu-repo/grantAgreement/MINECO/FIS2014-53448-C2-1/
FQM-225
FQM160
http://dx.doi.org/10.1016/j.physletb.2017.04.063
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300719

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