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Symmetry 2015, 7(2), 726-773; https://doi.org/10.3390/sym7020726

Probing Majorana Neutrinos and their CP Violation in Decays of Charged Scalar Mesons π, K, D, Ds, B, Bc

1
Department of Physics, Universidad Técnica Federico Santa María (UTFSM), Casilla 110-V,Valparaíso, Chile
2
Centro Científico Tecnológico de Valparaíso, UTFSM, Casilla 110-V, Valparaíso, Chile
3
Department of Physics and IPAP, Yonsei University, Seoul 120-749, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: David Cline
Received: 23 February 2015 / Revised: 16 April 2015 / Accepted: 21 April 2015 / Published: 26 May 2015
(This article belongs to the Special Issue Supersymmetry and Dark Matter)
Full-Text   |   PDF [1750 KB, uploaded 26 May 2015]

Abstract

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 particles. There are different ways to explore these issues. In this article we describe neutrino-mediated decays of charged pseudoscalar mesons such as π±,K± and B±, 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 (νMSM) which could simultaneously explain the Dark Matter and Baryon Asymmetry of the Universe. View Full-Text
Keywords: Majorana neutrino; CP violation; lepton number violating meson decays Majorana neutrino; CP violation; lepton number violating meson decays
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Cvetič, G.; Dib, C.O.; Kim, C.S.; Zamora-Saá, J. Probing Majorana Neutrinos and their CP Violation in Decays of Charged Scalar Mesons π, K, D, Ds, B, Bc. Symmetry 2015, 7, 726-773.

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