CP violation in modified bipair neutrino mixing and leptogenesis
| Autor: | Naoto Koizumi, Teruyuki Kitabayashi, Jun Iizuka, Yoshikazu Kaneko, Masaki Yasuè |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Physics
Particle physics Nuclear and High Energy Physics Modified bipair neutrino mixing CP-violating phases High Energy Physics::Phenomenology FOS: Physical sciences MAJORANA High Energy Physics - Phenomenology Baryon asymmetry High Energy Physics - Phenomenology (hep-ph) Leptogenesis CP violation High Energy Physics::Experiment Neutrino Neutrino oscillation Mixing (physics) Lepton |
| Zdroj: | Physics Letters B |
| Popis: | We study effects of CP violation in a modified bipair neutrino mixing scheme predicting $\sin^2\theta_{23}$ near both 0.4 and 0.6 currently consistent with experimentally allowed values. The source of CP violation is supplied by charged lepton mixing accompanied by a single phase, whose mixing size is assumed to be less than that of the Wolfenstein parameter for the quark mixing. Including results of leptogenesis, which is based on the minimal seesaw model, we obtain the allowed region of CP-violating Dirac and Majorana phases, which provides the observed baryon asymmetry of the universe in the case of the Dirac neutrino mass matrix subject to one zero texture. Comment: 5 pages, 30 figures, accepted for publication in Physics Letters B |
| Databáze: | OpenAIRE |
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