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# Neutrinoless Double Beta Decay and $<\eta>$ Mechanism in the Left-Right Symmetric Model

Sep 2022

The neutrinoless double beta ($0\nu\beta\beta$) decay is studied in theframework of left-right symmetric model. The coexistence of left and righthanded currents induces rather complicated interactions in the mixing of leptonand hadrons, called $<\lambda>$ mechanism and $<\eta>$ mechanism in addition tothe conventional effective neutrino mass $<m_\nu>$ mechanism. In this letter weindicate the possible magnification of $<\eta>$ mechanism and importance tosurvey $0\nu\beta\beta$ decay of different nuclei for specifying New Physicsbeyond the Standard Model.

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