Abstract:
Employing four different parametrization of the pairing plus multipolar type of effective
two-body interaction and three different parametrizations of Jastrow-type of short range correlations, the uncertainties in the nuclear transition matrix elements due to the exchange of light as
well as heavy Majorana neutrino for the 0+ → 0+ transition of neutrinoless positron β β decay are
estimated in the PHFB model.