Probing Majorana neutrinos in rare K and D, D_s, B, B_c meson decays

Details Probing Majorana neutrinos in rare K and D, D_s, B, B_c meson decays Probing Majorana neutrinos in rare K and D, D_s, B, B_c meson decays

2010-05-24

arxiv.org/abs/1005.4282v2

Final version, published in PRD82,053010(2010)

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages

Scientific paper

We study lepton number violating decays of charged K, D, D_s, B and B_c mesons of the form M^+\to {M'}^-\ell^+\ell^+, induced by the existence of Majorana neutrinos. These processes provide information complementary to neutrinoless double nuclear beta decays, and are sensitive to neutrino masses and lepton mixing. We explore neutrino mass ranges m_N from below 1 eV to several hundred GeV. We find that in many cases the branching ratios are prohibitively small, however in the intermediate range m_\pi < m_N < m_{B_c}, in specific channels and for specific neutrino masses, the branching ratios can be at the reach of high luminosity experiments like those at the LHC-b and future Super flavor-factories, and can provide bounds on the lepton mixing parameters.

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