Lepton number violation by heavy Majorana neutrino in $B$ decays

Abstract

Heavy Majorana neutrinos are predicted in addition to ordinary active neutrinos in the models with the seesaw mechanism. We investigate the lepton number violation (LNV) in $B$ decays induced by such a heavy neutrino $N$ with GeV-scale mass. Especially, we consider the decay channel $B^{+}\to {\mu }^{+}N\to {\mu }^{+}{\mu }^{+}{\pi }^{-}$ and derive the sensitivity limits on the mixing angle ${\Theta }_{\mu }$ by the future search experiments at Belle II and in $e^{+}{e}^{-}$ collisions at the Future Circular Collider (FCC-ee).

11 pages, 2 figures (Figure 2 is revised), v2: version to appear in Physics Letters B

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• Big-Bang Nucleosynthesis
• Updated fit to three neutrino mixing: status of leptonic CP violation
• Search for Majorana neutrinos in $B^{-}\to {\pi }^{+}{\mu }^{-}{\mu }^{-}$ decays
• Heavy neutrinos and the $pp\to lljj$ CMS data
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Cited by in corpus (8)

• Light sterile neutrinos and lepton-number-violating kaon decays in effective field theory
• The study of two quasi-degenerate heavy sterile neutrinos in rare meson decays
• Majorana neutrinos with effective interactions in B decays
• Searching for lepton number violating $\Lambda$ baryon decays mediated by GeV-scale Majorana neutrino with LHCb
• Heavy Neutrino Searches via Same-sign Lepton Pairs at the Higgs Factory
• On the Minimal Mixing of Heavy Neutrinos
• Neutrino masses in an $SU(4)\times U(1)$ -- electroweak model with a scalar decuplet
• CP violation in $B_s$ decays mediated by two nearly-degenerate Majorana neutrinos