Rare meson decays with three pairs of quasi-degenerate heavy neutrinos

Abstract

We consider a scenario of Low Scale Seesaw where the masses of its heavy Majorana neutrinos are arranged in a pattern of three pairs of quasi degenerate ones, in the range of O(1-6 GeV). Since they can violate lepton number by two units, they contribute to rare decays of Ds and Bc mesons, providing, besides, conditions for maximal CP violation. We found that new phenomenology is possible depending on how many of on-shell pairs mediate these decays. In particular, we present new constraints on muon-heavy neutrinos mixing parameters.

11 pages

References in corpus (11)

• Global fit to three neutrino mixing: critical look at present precision
• How to find neutral leptons of the nuMSM?
• Non-Standard Neutrino Interactions with Matter from Physics Beyond the Standard Model
• A possible symmetry of the $\nu$MSM
• Sterile Neutrinos as the Origin of Dark and Baryonic Matter
• Flavour Covariant Transport Equations: an Application to Resonant Leptogenesis
• Direct Bounds on Electroweak Scale Pseudo-Dirac Neutrinos from $\sqrt{s}=8$ TeV LHC Data
• Probing the Majorana neutrinos and their CP violation in decays of charged scalar mesons $\pi ,K,D,D_s,B,B_c$
• Type II Seesaw Higgs Triplet as the inflaton for Chaotic Inflation and Leptogenesis
• CP Violation with Majorana neutrinos in K Meson Decays
• Neutrinos with a linear seesaw mechanism in a scenario of gauged B-L symmetry

Cited by in corpus (11)

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• $\Delta$L=2 hyperon decays induced by Majorana neutrinos and doubly-charged scalars
• CP violation with GeV-scale Majorana neutrino in ${\Lambda }_b\to ({\Lambda }_c^{+},p^{+}){\pi }^{+}{\mu }^{-}{\mu }^{-}$ decays
• Sterile neutrinos in ${\Lambda }_b^0\to ({\Lambda }_c^{+},p^{+}){\ell }_1^{-}{\ell }_2^{-}{\ell }_3^{+}\nu$ decays
• CP violation in the rare Higgs decays via exchange of on-shell almost degenerate Majorana neutrinos, $H\to {\nu }_k{N}_j\to {\nu }_k{\ell }^{-}U\bar{D}$ and $H\to {\nu }_k{N}_j\to {\nu }_k{\ell }^{+}\bar{U}D$
• Probe the Mixing Parameter $|V_{\tau N}{|}^2$ for Heavy Neutrinos
• Dirac-Majorana neutrinos distinction in four-body decays
• On the relation between the CP phases in the PMNS matrix, CP-violation with sterile neutrinos and leptogenesis