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dc.date.accessioned | 2019-11-04T12:41:37Z | |
dc.date.available | 2019-11-04T12:41:37Z | |
dc.date.issued | 2012-08 | |
dc.identifier.uri | http://sedici.unlp.edu.ar/handle/10915/84692 | |
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. | en |
dc.format.extent | 249-253 | es |
dc.language | en | es |
dc.subject | Λ-hypernuclei | es |
dc.subject | FSI | es |
dc.subject | Non-mesonic weak decay | es |
dc.subject | Two-nucleon induced decay | es |
dc.title | On the effect of the Δ(1232) in hypernuclear non-mesonic weak decay: a microscopic approach | en |
dc.type | Articulo | es |
sedici.identifier.other | http://dx.doi.org/10.1016/j.physletb.2012.08.027 | es |
sedici.identifier.issn | 0370-2693 | es |
sedici.creator.person | Bauer, Eduardo | es |
sedici.creator.person | Garbarino, G. | es |
sedici.subject.materias | Física | es |
sedici.description.fulltext | true | es |
mods.originInfo.place | Facultad de Ciencias Exactas | es |
sedici.subtype | Articulo | es |
sedici.rights.license | Creative Commons Attribution 3.0 Unported (CC BY 3.0) | |
sedici.rights.uri | http://creativecommons.org/licenses/by/3.0/ | |
sedici.description.peerReview | peer-review | es |
sedici.relation.journalTitle | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | es |
sedici.relation.journalVolumeAndIssue | vol. 716, no. 1 | es |
sedici.rights.sherpa | * Color: verde* Pre-print del autor: si* Post-print del autor: si* Versión de editor/PDF:si* Condiciones:>>Creative Commons Attribution License>>Los autores conservan el copyright>>On pre-print server, author's website, institutional repository>>If mandated by funding agency, on subject repository or centralised repository>>La fuente editorial debe reconocerse>>La versión de editor/PDF puede utilizarse>>All titles are open access journals>>These titles are participants in SCOAP3>>Applies to Nuclear Physics B and Physics Letters B* Link a Sherpa: http://sherpa.ac.uk/romeo/issn/0370-2693/es/ |