Jilberto Zamora-Saa "Heavy Right Handed Neutrinos: phenomenology and future searches".
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Europe/Moscow
Description
Neutrinos are the only matter particles in the Standard Model of particle physics that have only been observed with left-handed chirality to date. If right handed neutrinos exist, they could be responsible for several phenomena that have no explanation within the Standard Model, including neutrino oscillations, the baryon asymmetry of the universe, and dark matter. On the other hand their existence can produce a new phenomenology which involve lepton number violating processes. In this talk, I will present a phenomenological discussion of neutrino-mediated decays of charged pseudoscalar mesons and tau lepton such as π±→e±e±μ∓ν, M→l1±l2±M∓ and τ±→ M1± M2∓ l∓. Our discussion will be focused on scenarios where extra neutrinos are heavy and can be on their mass shell, also we will discuss possible ways of using these decays in order to distinguish between the Dirac and Majorana nature of neutrinos. Further, we will discuss possibilities of detecting CP violation in such decays when there are at least two almost degenerate Majorana neutrinos involved.