IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
Effects of orbital occupancies on the neutrinoless ââ matrix element of 76Ge
Autor/es:
J. SUHONEN; O. CIVITARESE
Revista:
PHYSICS LETTERS B
Referencias:
Año: 2008 vol. 668 p. 277 - 281
ISSN:
0370-2693
Resumen:
In this work we use the recently measured neutron occupancies in the 76Ge and 76Se nuclei as a guideline
to define the neutron quasiparticle states in the 1p0f0g shell. We define the proton quasiparticles by
inspecting the odd-mass nuclei adjacent to 76Ge and 76Se. We insert the resulting quasiparticles in a
protonneutron quasiparticle random-phase approximation (pnQRPA) calculation of the nuclear matrix
element of the neutrinoless double beta (0íââ) decay of 76Ge. A realistic model space and effective
microscopic two-nucleon interactions are used. We include the nucleonnucleon short-range correlations
and other relevant corrections at the nucleon level. It is found that the resulting 0íââ matrix element is
smaller than in the previous pnQRPA calculations, and closer to the recently reported shell-model results.76Ge and 76Se nuclei as a guideline
to define the neutron quasiparticle states in the 1p0f0g shell. We define the proton quasiparticles by
inspecting the odd-mass nuclei adjacent to 76Ge and 76Se. We insert the resulting quasiparticles in a
protonneutron quasiparticle random-phase approximation (pnQRPA) calculation of the nuclear matrix
element of the neutrinoless double beta (0íââ) decay of 76Ge. A realistic model space and effective
microscopic two-nucleon interactions are used. We include the nucleonnucleon short-range correlations
and other relevant corrections at the nucleon level. It is found that the resulting 0íââ matrix element is
smaller than in the previous pnQRPA calculations, and closer to the recently reported shell-model results.76Ge and 76Se. We insert the resulting quasiparticles in a
protonneutron quasiparticle random-phase approximation (pnQRPA) calculation of the nuclear matrix
element of the neutrinoless double beta (0íââ) decay of 76Ge. A realistic model space and effective
microscopic two-nucleon interactions are used. We include the nucleonnucleon short-range correlations
and other relevant corrections at the nucleon level. It is found that the resulting 0íââ matrix element is
smaller than in the previous pnQRPA calculations, and closer to the recently reported shell-model results.íââ) decay of 76Ge. A realistic model space and effective
microscopic two-nucleon interactions are used. We include the nucleonnucleon short-range correlations
and other relevant corrections at the nucleon level. It is found that the resulting 0íââ matrix element is
smaller than in the previous pnQRPA calculations, and closer to the recently reported shell-model results.íââ matrix element is
smaller than in the previous pnQRPA calculations, and closer to the recently reported shell-model results.