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Effective Lagrangian Approach to pion photoproduction from the nucleon

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dc.contributor.authorFernández Ramírez, César
dc.contributor.authorMoya de Guerra, E.
dc.contributor.authorUdías, J. M.
dc.date.accessioned2024-12-09T10:02:05Z
dc.date.available2024-12-09T10:02:05Z
dc.date.issued2006-06
dc.descriptionThis is an Accepted Manuscript of an article published by Elsevier in "Annals of Physics, 321(6), 1408-1456", available at: https://doi.org/10.1016/j.aop.2006.02.009
dc.descriptionEste es el manuscrito aceptado del artículo publicado por Elsevier en "Annals of Physics, 321(6), 1408-1456", disponible en línea: https://doi.org/10.1016/j.aop.2006.02.009
dc.description.abstractWe present a pion photoproduction model on the free nucleon based on an Effective Lagrangian Approach (ELA) which includes the nucleon resonances (Δ(1232), N(1440), N(1520), N(1535), Δ(1620), N(1650), and Δ(1700)), in addition to Born and vector meson exchange terms. The model incorporates a new theoretical treatment of spin-3/2 resonances, first introduced by Pascalutsa, avoiding pathologies present in previous models. Other main features of the model are chiral symmetry, gauge invariance, and crossing symmetry. We use the model combined with modern optimization techniques to assess the parameters of the nucleon resonances on the basis of world data on electromagnetic multipoles. We present results for electromagnetic multipoles, differential cross-sections, asymmetries, and total cross-sections for all one pion photoproduction processes on free nucleons. We find overall agreement with data from threshold up to 1 GeV in laboratory frame.en
dc.description.versionversión final
dc.identifier.citationFernández-Ramírez, Moya de Guerra, & Udías. (2006). Effective Lagrangian Approach to pion photoproduction from the nucleon. Annals of Physics, 321(6), 1408-1456. https://doi.org/10.1016/J.AOP.2006.02.009
dc.identifier.doihttps://doi.org/10.1016/j.aop.2006.02.009
dc.identifier.issn1096-035X
dc.identifier.urihttps://hdl.handle.net/20.500.14468/24751
dc.journal.issue6
dc.journal.titleAnnals of Physics
dc.journal.volume321
dc.language.isoen
dc.page.final1456
dc.page.initial1408
dc.publisherElsevier
dc.relation.centerFacultades y escuelas::Facultad de Ciencias
dc.relation.departmentFísica Interdisciplinar
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject.keywordsPion photoproductionen
dc.subject.keywordselectromagnetic multipolesen
dc.subject.keywordsnucleon resonancesen
dc.subject.keywordsspin-3/2en
dc.titleEffective Lagrangian Approach to pion photoproduction from the nucleonen
dc.typeartículoes
dc.typejournal articleen
dspace.entity.typePublication
relation.isAuthorOfPublication66882618-d034-433a-bfcf-670b00bc6adf
relation.isAuthorOfPublication.latestForDiscovery66882618-d034-433a-bfcf-670b00bc6adf
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