Relativistic model for the nonmesonic weak decay of single-lambda hypernuclei

Having in mind its future extension for theoretical investigations related to charmed nuclei, we develop a relativistic formalism for the nonmesonic weak decay (NMWD) of single-Λ hypernuclei in the framework of the independent-particle shell model and with the dynamics represented by the one-meson-e...

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Bibliographic Details
Published in:Journal of physics. G, Nuclear and particle physics Nuclear and particle physics, 2016-06, Vol.43 (5), p.55102-55123
Main Authors: Fontoura, C E, Krmpoti, F, Galeão, A P, Conti, C De, Krein, G
Format: Article
Language:English
Subjects:
Charm (particle physics)
charm hypernuclei
Decay
Dynamic tests
Formalism
Hypernuclei
Mathematical models
nonmesonic weak decay
Nuclei
Particle physics
relativistic nuclear models
strange hypernuclei
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Summary:Having in mind its future extension for theoretical investigations related to charmed nuclei, we develop a relativistic formalism for the nonmesonic weak decay (NMWD) of single-Λ hypernuclei in the framework of the independent-particle shell model and with the dynamics represented by the one-meson-exchange model. Numerical results for the one-nucleon-induced transition rates of are presented and compared with those obtained in the analogous nonrelativistic calculation. There is satisfactory agreement between the two approaches, and the only noteworthy difference is that the ratio is appreciably higher and closer to the experimental value in the relativistic calculation. The ability of describing existing data, including the most recent ones, on NMWD of Λ-hypernuclei, warrants application of the formalism to evaluate similar decay processes in charmed nuclei.
ISSN:0954-3899
1361-6471
DOI:10.1088/0954-3899/43/5/055102