Articulo
Phase-space factors and half-life predictions for Majoron-emitting beta(-)beta(-) decay
PHYSICAL REVIEW C
Registro en:
1150564
1150564
Autor
Kotila, J
Barea-Muñoz, José
Iachello, F
Institución
Resumen
A complete calculation of phase space factors (PSFs) for Majoron-emitting 0 nu beta(-)beta(-) decay modes is presented. The calculation makes use of exact Dirac wave functions with finite nuclear size and electron screening and includes lifetimes, single-electron spectra, summed electron spectra, and angular electron correlations. Combining these results with recent microscopic interacting boson model nuclear matrix elements (NMEs) we make half-life predictions for the ordinary Majoron decay (spectral index n = 1). Furthermore, comparing theoretical predictions with the obtained experimental lower bounds for this decay mode we are able to set limits on the effective Majoron-neutrino coupling constant <g(ee)(M)>. Regular 2015 FONDECYT FONDECYT