Lepton Flavor Violating Process in Degenerate and Inverse-Hierarchical Neutrino Models

Details Lepton Flavor Violating Process in Degenerate and Inverse-Hierarchical Neutrino Models Lepton Flavor Violating Process in Degenerate and Inverse-Hierarchical Neutrino Models

2001-10-22

arxiv.org/abs/hep-ph/0110283v3

Phys.Lett. B527 (2002) 206-214

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex file, 20 pages, 6 figures, revised version, discussion are added, one figure and one equation also added

Scientific paper

10.1016/S0370-2693(02)01180-2

We have investigated the lepton flavor violation in the supersymmetric framework assuming the large mixing angle MSW solution with the quasi-degenerate and the inverse-hierarchical neutrino masses. In the case of the quasi-degenerate neutrinos, the predicted branching ratio BR$(\mu \to e \gamma)$ strongly depends on $m_\nu$ and $U_{e3}$. For $U_{e3}\simeq 0.05$ with $m_\nu \simeq 0.3 \eV$, the prediction is close to the present experimental upper bound if the right-handed Majorana neutrino masses are degenerate. On the other hand, the prediction is larger than the experimental upper bound for $U_{e3}\geq 0.05$ in the case of the inverse-hierarchical neutrino masses.

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