CPViolation in Neutrino Oscillation and Leptogenesis
| Autor: | Morimitsu Tanimoto, Seji Kang, T. Endoh, Shinji Kaneko, Takuya Morozumi |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Physics
Particle physics Dirac (video compression format) media_common.quotation_subject High Energy Physics::Phenomenology FOS: Physical sciences General Physics and Astronomy Lepton number Asymmetry Nuclear physics High Energy Physics - Phenomenology MAJORANA High Energy Physics - Phenomenology (hep-ph) Leptogenesis CP violation High Energy Physics::Experiment Neutrino Neutrino oscillation media_common |
| Zdroj: | Physical Review Letters. 89 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.89.231601 |
| Popis: | We study the correlation between CP violation in neutrino oscillations and leptogenesis in the framework with two heavy Majorana neutrinos and three light neutrinos. Among three unremovable CP phases, a heavy Majorana phase contributes to leptogenesis. We show how the heavy Majorana phase contributes to Jarlskog determinant $J$ as well as neutrinoless double $\beta$ decay by identifying a low energy CP violating phase which signals the CP violating phase for leptogenesis. For some specific cases of the Dirac mass term of neutrinos, a direct relation between lepton number asymmetry and $J$ is obtained. For the most general case of the framework, we study the effect on $ J $ coming from the phases which are not related to leptogenesis, and also show how the correlation can be lost in the presence of those phases. Comment: 4 pages and 3 figures |
| Databáze: | OpenAIRE |
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