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dc.date.accessioned | 2019-05-09T16:42:52Z | |
dc.date.available | 2019-05-09T16:42:52Z | |
dc.date.issued | 2017-03-10 | |
dc.identifier.uri | http://sedici.unlp.edu.ar/handle/10915/74894 | |
dc.description.abstract | The nonmesonic weak decay of 3hypernuclei is studied within a microscopic diagrammatic approach which is extended to include the three-nucleon induced mechanism. We adopt a nuclear matter formalism which, through the local density approximation, allows us to model finite hypernuclei, a one-meson-exchange weak transition potential and a Bonn nucleon–nucleon strong potential. One-, two-and three-nucleon induced weak decay rates are predicted for 123Cby including ground state correlations up to second order in the nucleon–nucleon potential and the recoil of the residual nucleus. Three-nucleon stimulated decays, 3NNN→nNNN(N=nor p), are considered here for the first time. The obtained decay rates compare well with the latest KEK and FINUDA data. The three-nucleon induced rate turns out to be dominated by nnp-and npp-induced decays, it amounts to ∼7%of the total nonmesonic rate and it is ∼1/2of the neutron-induced decay rate. The reduction effect of the nuclear recoil is particularly relevant for the three-nucleon induced rates (∼15%), less important for the two-nucleon induced rates (∼4%) and negligible for the one-nucleon induced rates. Given the non-negligible size of the three-nucleon induced contribution and consequently its importance in the precise determination of the complete set of decay rates, new measurements and/or experimental analysis are encouraged. | en |
dc.format.extent | 144-148 | es |
dc.language | en | es |
dc.subject | astrofísica | es |
dc.subject | Λ hypernuclei, nonmesonic weak decay | en |
dc.title | Nonmesonic weak decay of Λ hypernuclei: The three-nucleon induced mode | en |
dc.type | Articulo | es |
sedici.identifier.other | https://doi.org/10.1016/j.physletb.2017.01.010 | |
sedici.identifier.issn | 0370-4661 | es |
sedici.creator.person | Bauer, Eduardo | es |
sedici.creator.person | Garbarino, G. | es |
sedici.creator.person | Rodríguez Peña, Carlos Andrés | es |
sedici.subject.materias | Física | es |
sedici.description.fulltext | true | es |
mods.originInfo.place | Facultad de Ciencias Astronómicas y Geofísicas | es |
sedici.subtype | Articulo | es |
sedici.rights.license | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | |
sedici.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
sedici.description.peerReview | peer-review | es |
sedici.relation.journalTitle | Physics Letters B | es |
sedici.relation.journalVolumeAndIssue | vol. 766 | es |