Competition between standard and exotic double beta decays
arXiv:nucl-th/9801001 · doi:10.1016/S0370-2693(98)00891-0
Abstract
We discuss the contributions of higher order terms in weak Hamiltonian to the standard two-neutrino double beta decay. The formalism for the unique first forbidden transitions has been developed, and it is shown that they can alter the two-electron energy spectrum. Yet, their effect is too small to screen the detection of exotic neutrinoless double beta decays, which are candidates for testing the physics beyond the standard model.
9 pages, latex, 1ps figures, minor changes, to appear in Phys. Lett. B