Nuclear transition matrix elements for Majoron-accompanied neutrinoless double-beta decay within a projected-Hartree-Fock-Bogoliubov model

摘要

The model-dependent uncertainties in the nuclear transition matrix elements for the Majoron-accompanied neutrinoless double-beta decay (0(+) -> 0(+) transition) of Zr-94,Zr-96, Mo-100, Te-128,Te-130, and Nd-150 isotopes are calculated by employing the projected-Hartree-Fock-Bogoliubov formalism with four different parametrizations of the pairing plus multipolar two-body interactions and three different parametrizations of the Jastrow short-range correlations. Uncertainties in the nuclear transition matrix elements turn out to be less than 15% and 21% for decays involving the emission of single and double Majorons, respectively.