# Neutrinoless Double Beta-Decay - High Energy Physics - Phenomenology

Abstract: The neutrinoless double $\beta$-decay of nuclei is reviewed. We discussneutrino mixing and 3x3 PMNS neutrino mixing matrix. Basic theory ofneutrinoless double $\beta$-decay is presented in some details. Results ofdifferent calculations of nuclear matrix element are discussed. Experimentalsituation is considered. The Appendix is dedicated to E. Majorana briefbiography and his paper in which the theory of Majorana particles is given

Author: S. M. Bilenky

Source: https://arxiv.org/