Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-09-03
Phys.Rev.Lett. 89 (2002) 231601
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages and 3 figures
Scientific paper
10.1103/PhysRevLett.89.231601
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.
Endoh Testuo
Kaneko Satoru
Kang Sin Kyu
Morozumi Takuya
Tanimoto Morimitsu
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