matrix elements for the ground state to ground state two-netrino double beta decay of te isotopes in a hybrid model.

D. R. BES; OSVALDO CIVITARESE

PHYS. REV. - C

AMER PHYSICAL SOC

Lugar: new york; Año: 2010 vol. 81 p. 143151 - 1431512

0556-2813

Theoretical matrix elements, for the ground-state to ground-statetwo-neutrino double-beta-decay mode(2 nu }beta -beta of Te128,130isotopes, are calculated within a formalism that describes interactionsbetween neutrons in a superfluid phase and protons in a normal phase.The elementary degrees of freedom of the model are proton-pair modes andpairs of protons and quasineutrons. The calculation is basically aparameter-free one, because all relevant parameters are fixed from thephenomenology. A comparison with the available experimental data ispresented.