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dc.contributor.author
Bauer, Eduardo
dc.contributor.author
Garbarino, G.
dc.date.available
2019-04-11T14:19:59Z
dc.date.issued
2012-09
dc.identifier.citation
Bauer, Eduardo; Garbarino, G.; On the effect of the Δ(1232) in hypernuclear non-mesonic weak decay: A microscopic approach; Elsevier Science; Physics Letters B; 716; 1; 9-2012; 249-253
dc.identifier.issn
0370-2693
dc.identifier.uri
http://hdl.handle.net/11336/74027
dc.description.abstract
The non-mesonic weak decay of Λ-hypernuclei is studied within a microscopic diagrammatic approach which includes, for the first time, the effect or the δ-baryon resonance. We adopt a nuclear matter formalism extended to finite nuclei via the local density approximation, a one-meson exchange weak transition potential, a Bonn nucleon-nucleon strong potential and a δ. N→. NN strong potential based on the Landau-Migdal theory. Ground state correlations and final state interactions (FSI), at second order in the baryon-baryon strong interaction, are introduced on the same footing for all the isospin channels of one- and two-nucleon induced decays. Weak decay rates and single and double-coincidence nucleon spectra are predicted for CΛ12 and compared with recent KEK and FINUDA data. The δ(1232) introduces new FSI-induced decay mechanisms which lead to an improvement when comparing the obtained nucleon spectra with data, while it turns out to have a negligible effect on the decay rates. Discrepancies with experiment remain only for emission spectra involving protons, but are mostly restricted to double-nucleon correlations in the non-back-to-back kinematics. © 2012 Elsevier B.V.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Hypernuclei
dc.subject
Non-Mesonic Weak Decay
dc.subject
Two-Nucleon Induced
dc.subject
Fsi
dc.subject.classification
Astronomía
dc.subject.classification
Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
On the effect of the Δ(1232) in hypernuclear non-mesonic weak decay: A microscopic approach
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-04-05T18:37:17Z
dc.journal.volume
716
dc.journal.number
1
dc.journal.pagination
249-253
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Bauer, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
dc.description.fil
Fil: Garbarino, G.. Università di Torino; Italia
dc.journal.title
Physics Letters B
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.physletb.2012.08.027
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0370269312008647?via%3Dihub
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