Study of the Standard Model and Majorana neutrino contributions to * * National Natural Science Foundation of China (11635009, 11605075) and Natural Science Foundation of Shandong Province (ZR2017JL006)

Abstract

Lepton number violation processes can be induced by the Majorana neutrino exchange, which provide evidence for the Majorana nature of neutrinos. In addition to the natural explanation of the small neutrino masses, Type-I seesaw mechanism predicts the existence of Majorana neutrinos. The aim of this work is to study the B meson rare decays in the Standard Model and its extensions, and then to investigate the same-sign decay process . The corresponding dilepton invariant mass distributions are calculated. It is found that the dilepton angular distributions could shed light on the properties of new interactions induced by Majorana neutrinos.