This paper is designed to calculate the branching ratio of four-body decays of B meson with lepton number changed by 2. With the new experimental data limit to lepton-number violation processes, we update the upper limits of mixing parameters between heavy Majorana neutrino and charged leptons. Afterwards, we calculate the branching ratio of B0(P)→D∗−(P1)ℓ1+(P2)ℓ2+(P3)M2−(P4) using the updated parameters. It is found that the most hopeful decay channel is B0(P)→D∗−(P1)e1+(P2)e2+(P3)ρ−(P4) or B0(P)→D∗−(P1)e(μ)1+(P2)μ(e)2+(P3)ρ−(P4), whose branching ratio can reach about 10−4 with heavy Majorana neutrino mass range around 2GeV.
@article{arxiv.1710.03886,
title = {Four-body decays of $B$ meson with lepton number violation},
author = {Han Yuan and Tianhong Wang and Yue Jiang and Qiang Li and Guo-Li Wang},
journal= {arXiv preprint arXiv:1710.03886},
year = {2018}
}