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

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arxiv 1609.06113 v2 pith:QG7LE7CC submitted 2016-09-20 hep-ph hep-ex

classification hep-phhep-ex
keywords heavydecaysfutureleptonmajorananeutrinoneutrinosnumber
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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).

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Cited by 1 Pith paper

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  1. Sensitivity of Lepton Number Violating Meson Decays in Different Experiments

    hep-ph 2019-08 conditional novelty 5.0 of 10

    For 0.14 to 6 GeV heavy neutrinos, accounting for the parent meson's velocity weakens projected LNV meson decay sensitivities by one to two orders of magnitude at NA62 and SHiP.

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