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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Fontoura, C. E. [1] ; Krmpotic, F. [2, 1] ; Galeao, A. P. [1] ; De Conti, C. [3] ; Krein, G. [1]
Total Authors: 5
Affiliation:
[1] Univ Estadual Paulista, Inst Fis Teor, Rua Dr Bento Teobaldo Ferraz, 271 Bloco 3, BR-01140070 Sao Paulo, SP - Brazil
[2] Univ Nacl La Plata, Inst Fis La Plata, RA-1900 La Plata, Buenos Aires - Argentina
[3] Univ Estadual Paulista, Campus Expt Rosana, BR-19274000 Rosana, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS; v. 43, n. 5 MAY 2016.
Web of Science Citations: 1
Abstract

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-Lambda hypernuclei in the framework of the independent-particle shell model and with the dynamics represented by the (pi, K) one-meson-exchange model. Numerical results for the one-nucleon-induced transition rates of C-12(Lambda) 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 Gamma(n)/Gamma(p) 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 Lambda-hypernuclei, warrants application of the formalism to evaluate similar decay processes in charmed nuclei. (AU)

FAPESP's process: 13/01907-0 - São Paulo Research and Analysis Center
Grantee:Sergio Ferraz Novaes
Support type: Research Projects - Thematic Grants
FAPESP's process: 13/01790-5 - Strange and charmed hypernuclei: structure and weak decay
Grantee:Gastão Inácio Krein
Support type: Research Grants - Visiting Researcher Grant - International