Upload resources

Upload your works to SEDICI to increase its visibility and improve its impact

 

Show simple item record

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/


Download Files

This item appears in the following Collection(s)

Creative Commons Attribution 3.0 Unported (CC BY 3.0) Except where otherwise noted, this item's license is described as Creative Commons Attribution 3.0 Unported (CC BY 3.0)