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arXiv · 1710.03886

Four-body decays of $B$ meson with lepton number violation

Han Yuan·Tianhong Wang·Yue Jiang·Qiang Li·Guo-Li Wang
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Abstract

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 $B^0(P)\rightarrow D^{*-}(P_1)\ell^+_1(P_2)\ell^+_2(P_3)M_2^-(P_4)$ using the updated parameters. It is found that the most hopeful decay channel is $B^0(P)\rightarrow D^{*-}(P_1)e^+_1(P_2)e^+_2(P_3)ρ^-(P_4)$ or $B^0(P)\rightarrow D^{*-}(P_1)e(μ)^+_1(P_2)μ(e)^+_2(P_3)ρ^-(P_4)$, whose branching ratio can reach about $10^{-4}$ with heavy Majorana neutrino mass range around $2~\mathrm{GeV}$.

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Han Yuan, Tianhong Wang, Yue Jiang, Qiang Li, Guo-Li Wang. 2017-10-11. Four-body decays of $B$ meson with lepton number violation. https://doi.org/10.1088/1361-6471%2Faabd9d

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