Abstract
A two-delta () process and a new two-nucleon () process are proposed for neutrinoless decay. The conventional mechanism is also examined. The interaction and the integration over virtual neutrino momenta lead to the dominance of the process. This dominance enables one to relate decay rates and forward-angle double-charge-exchange cross sections for (g.s.) → (g.s.) transitions, and to use this relation to obtain limits on lepton-number nonconservation from experimental double-charge-exchange cross sections in a nearly nuclear-structure-model-independent way.
- Received 13 February 1986
DOI:https://doi.org/10.1103/PhysRevLett.57.968
©1986 American Physical Society