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Bound-state double-beta decay

Babič Andrej, Mgr. Faculty of Nuclear Sciences and Physical Engineering CTU, JINR Dubna
Štefánik D. Comenius University, Bratislava
Krivoruchenko M.I. JINR
Šimkovic F. Comenius university; JINR


Scientific journal
Physical Review C, 98 (6), 065501


We consider alternative modes of two-neutrino and neutrinoless double-beta decays in which one beta 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 bound-state neutrinoless double-beta decays are strongly suppressed, their two-neutrino counterparts can be observed in the next-generation double-beta-decay experiments, most notably SuperNEMO.

Cite article as:
A. Babič, D. Štefánik, M. Krivoruchenko, F. Šimkovic, "Bound-state double-beta decay", Physical Review C, 98 (6), 065501 (2018)