Bound-state double-β decay [article]

A. Babič, D. Štefánik, M. I. Krivoruchenko, F. Šimkovic
2018 arXiv   pre-print
We consider new modes of two-neutrino and neutrinoless double-β decays in which one β electron goes over to a continuous spectrum and the other occupies a vacant bound level of the daughter ion. We calculate the corresponding phase-space factors of the final states, estimate the partial decay rates, and derive the one- and two-electron energy spectra using relativistic many-electron wave functions of atoms provided by the multiconfiguration Dirac-Hartree-Fock package GRASP2K. While the
more » ... te neutrinoless double-β decays are strongly suppressed, their two-neutrino counterparts can be observed in the next-generation double-β-decay experiments, most notably SuperNEMO.
arXiv:1805.07815v1 fatcat:xxbaqztrbfghnn6d56mv5oxbui