Amb motiu del tancament d'estiu, la validació de documents es reprendrà a partir del 28 d'agost de 2026. Disculpeu les molèsties.
Con motivo del cierre de verano, la validación de documentos se reanudará a partir del 28 de agosto de 2026. Disculpad las molestias
Due to the summer closure, document validation will resume starting August 28, 2026. We apologize for any inconvenience.

The role of vector-baryon channels and resonances in the gamma p to K0 Sigma+ and gamma n to K0 Sigma0 reactions near the K* Lambda threshold

Vista senzilla d'ítem
dc.contributor.authorRamos Gómez, Àngels
dc.contributor.authorOset Baguena, Eulogio
dc.date.accessioned2017-02-22T15:23:43Z
dc.date.available2017-02-22T15:23:43Z
dc.date.issued2013-11
dc.date.updated2017-02-22T15:23:43Z
dc.description.abstractWe have studied the γp→K0Σ+γp→K0Σ+ reaction in the energy region around the K⁎ΛK⁎Λ and K⁎ΣK⁎Σ thresholds, where the CBELSA/TAPS cross section shows a sudden drop and the differential cross section experiences a transition from a forward-peaked distribution to a flat one. Our coupled-channel model incorporates the dynamics of the vector meson-baryon interaction which is obtained from the hidden gauge formalism. We find that the cross section in this energy region results from a delicate interference between amplitudes having K⁎ΛK⁎Λ and K⁎ΣK⁎Σ intermediate states. The sharp downfall is dictated by the presence of a nearby N⁎N⁎ resonance produced by our model, a feature that we have employed to predict its properties. We also show results for the complementary γn→K0Σ0γn→K0Σ0 reaction, the measurement of which would test the mechanism proposed in this work.
dc.format.extent6 p.
dc.format.mimetypeapplication/pdf
dc.identifier.idgrec630183
dc.identifier.issn0370-2693
dc.identifier.urihttps://hdl.handle.net/2445/107266
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2013.10.012
dc.relation.isformatofVersió postprint del document publicat a: https://doi.org/10.1016/j.physletb.2013.10.012
dc.relation.ispartofPhysics Letters B, 2013, vol. 727, num. 1-3, p. 287-292
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/FP7/283286/EU//HADRONPHYSICS3
dc.relation.urihttps://doi.org/10.1016/j.physletb.2013.10.012
dc.rightscc-by-nc-nd (c) Elsevier B.V., 2013
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es
dc.sourceArticles publicats en revistes (Física Quàntica i Astrofísica)
dc.subject.classificationMesons (Física nuclear)
dc.subject.classificationBarions
dc.subject.classificationReaccions nuclears
dc.subject.otherMesons (Nuclear physics)
dc.subject.otherBaryons
dc.subject.otherNuclear reactions
dc.titleThe role of vector-baryon channels and resonances in the gamma p to K0 Sigma+ and gamma n to K0 Sigma0 reactions near the K* Lambda threshold
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/acceptedVersion

Fitxers

Paquet original

Mostrant 1 - 1 de 1
Miniatura
Nom:
630183.pdf
Mida:
222.19 KB
Format:
Adobe Portable Document Format
Descarregar

Col·leccions

Articles publicats en revistes (Física Quàntica i Astrofísica)
Publicacions de projectes de recerca finançats per la UE