Nuclear Transition Matrix Elements for Neutrinoless Double-β Decay of ~(76)Ge and ~(82)Se Isotopes

摘要

Within mechanisms involving light and heavy Majorana neutrinos, the nuclear transition matrix elements (NTMEs) for the neutrinoless double-β decay of ~(76)Ge and ~(82)Se isotopes are calculated. Uncertainties in the average {formula} and {formula} due to the exchange of light and heavy Majorana neutrinos, respectively, turn out to be about 10% and 37%, respectively. Limits on the effective mass of light Majorana neutrino (mv), heavy Majorana neutrino (M_N) and Majoron-neutrino coupling constant (g_M) of classical Majoron model are extracted.