Transition Operators Entering Neutrinoles Double Electron Capture to Excited Nuclear States

Abstract

We construct the effective transition operators relevant for neutrinoless double electron capture leading to final nuclear states different than $0^{+}$. From the structure of these operators we see that, if such a process is observed experimentally, it will be very helpful in singling out the very important light neutrino mass contribution from the other lepton violating mechanisms

Comments: 9 LaTex pages, 2 figures, 1 table, references added