Lepton number violation in top quark and neutral B meson decays

Details Lepton number violation in top quark and neutral B meson decays Lepton number violation in top quark and neutral B meson decays

2011-08-30

arxiv.org/abs/1108.6009v2

Phys. Rev. D 84, 096011 (2011)

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 6 figures, "Added comments on sensitivities. Version accepted for publication"

Scientific paper

10.1103/PhysRevD.84.096011

Lepton number violation (LNV) can be induced by Majorana neutrinos in four-body decays of the neutral B meson and the top quark. We study the effects of Majorana neutrinos in these |\Delta L|=2 decays in an scenario where a single heavy neutrino can enhance the amplitude via the resonant mechanism. Using current bounds on heavy neutrino mixings, the most optimistic branching ratios turn out to be at the level of 10^{-6} for \bar{B} -> D^+e^-e^-\pi^+ and t -> bl^+l^+W^- decays. Searches for these LNV decays at future facilities can provide complementary constraints on masses and mixings of Majorana neutrinos.

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