supported in part by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under Awards No. DE-SC0017887, No. DE-FG02-97ER41019, No. DE-SC0015376 (the DBD Topical Theory Collaboration) and No. DE-SC0018083 (NUCLEI SciDAC-4 Collaboration)
The neutrinoless double beta(0vββ)decay is a hypothetical weak process which manifests itself in the“low-energy”environment of atomic nuclei as two neutrons in a parent nucleus(A,Z)decays into two protons in a dau...