High Energy Physics - Phenomenology
[Submitted on 4 Mar 2015 (v1), last revised 26 May 2015 (this version, v3)]
Title:Probing the Majorana neutrinos and their CP violation in decays of charged scalar mesons $π, K, D, D_s, B, B_c$
View PDFAbstract:Some of the outstanding questions of particle physics today concern the neutrino sector, in particular whether there are more neutrinos than those already known and whether they are Dirac or Majorana this http URL are different ways to explore these issues. In this article we describe neutrino-mediated decays of charged pseudoscalar mesons such as $\pi^{\pm}$, $K^{\pm}$ and $B^{\pm}$, in scenarios where extra neutrinos are heavy and can be on their mass shell. We discuss semileptonic and leptonic decays of such kinds. We investigate possible ways of using these decays in order to distinguish between the Dirac and Majorana character of neutrinos. Further, we argue that there are significant possibilities of detecting CP violation in such decays when there are at least two almost degenerate Majorana neutrinos involved. This latter type of scenario fits well into the known neutrino minimal standard model ($\nu$MSM) which could simultaneously explain the Dark Matter and Baryon Asymmetry of the Universe.
Submission history
From: Gorazd Cvetic [view email][v1] Wed, 4 Mar 2015 16:14:11 UTC (1,237 KB)
[v2] Wed, 6 May 2015 17:30:53 UTC (1,251 KB)
[v3] Tue, 26 May 2015 18:30:48 UTC (1,284 KB)
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