Neutrinoless double-βdecay with quasi-Dirac neutrinos

Abstract

A mechanism to generate the neutrinoless double-$\beta$ decay process with quasi-Dirac neutrinos and no right-handed currents is described. Relatively heavy neutrinos can easily be made consistent with the constraints on the ${\left(\beta \beta \right)}_{0\nu }$ rate. The proposed scheme for the violation of lepton number can in principle be distinguished from a Majorana mass in $\Delta l=2\mathrm{}$ oscillation phenomena.