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Upper energy limit of heavy baryon chiral perturbation theory in neutral pion photoproduction

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dc.contributor.authorFernández Ramírez, César
dc.contributor.authorBernstein, A.M.
dc.date.accessioned2024-12-09T08:49:27Z
dc.date.available2024-12-09T08:49:27Z
dc.date.issued2013-07-23
dc.descriptionThis is an Accepted Manuscript of an article published by Elsevier in "Physics Letters B, Volume724(4-5), 253-258", available at: https://doi.org/10.1016/j.physletb.2013.06.020
dc.descriptionEste es el manuscrito aceptado del artículo publicado por Elsevier en "Physics Letters B, Volume 724(4-5), 253-258", disponible en línea: https://doi.org/10.1016/j.physletb.2013.06.020
dc.description.abstractWith the availability of the new neutral pion photoproduction from the proton data from the A2 and CB-TAPS Collaborations at Mainz it is mandatory to revisit Heavy Baryon Chiral Perturbation Theory (HBChPT) and address the extraction of the partial waves as well as other issues such as the value of the low-energy constants, the energy range where the calculation provides a good agreement with the data and the impact of unitarity. We find that, within the current experimental status, HBChPT with the fitted LECs gives a good agreement with the existing neutral pion photoproduction data up to ∼170 MeV and that imposing unitarity does not improve this picture. Above this energy the data call for further improvement in the theory such as the explicit inclusion of the (1232). We also find that data and multipoles can be well described up to ∼185 MeV with Taylor expansions in the partial waves up to first order in pion energy.en
dc.description.versionversión final
dc.identifier.citationFernández-Ramírez, & Bernstein. (2013). Upper energy limit of heavy baryon chiral perturbation theory in neutral pion photoproduction. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 724(4-5), 253-258. https://doi.org/10.1016/J.PHYSLETB.2013.06.020
dc.identifier.doihttps://doi.org/10.1016/j.physletb.2013.06.020
dc.identifier.issn0370-2693
dc.identifier.urihttps://hdl.handle.net/20.500.14468/24743
dc.journal.issue4-5
dc.journal.titlePhysics Letters B
dc.journal.volume724
dc.language.isoen
dc.page.final258
dc.page.initial253
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/4.0/deed.es
dc.subject.keywordschiral perturbation theoryes
dc.subject.keywordseffective field theoryes
dc.subject.keywordspion photoproductiones
dc.subject.keywordsheavy baryones
dc.titleUpper energy limit of heavy baryon chiral perturbation theory in neutral pion photoproductionen
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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