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Corrections to Tri-bimaximal Neutrino Mixing: Renormalization and Planck Scale Effects
Amol Dighe, Srubabati Goswami, Werner Rodejohann
We study corrections to tri-bimaximal (TBM) neutrino mixing from renormalization group (RG) running and from Planck scale effects. We show that while the RG effects are negligible…
On Symmetric Lepton Mixing Matrices
Kathrin A. Hochmuth, Werner Rodejohann
Contrary to the quark mixing matrix, the lepton mixing matrix could be symmetric. We study the phenomenological consequences of this possibility. In particular, we find that symmet…
Scaling in the Neutrino Mass Matrix
R. N. Mohapatra, W. Rodejohann
In an attempt to uncover any underlying structure in the neutrino mass matrix, we discuss the possibility that the ratios of elements of its Majorana mass matrix are equal. We call…
Low and High Energy Phenomenology of Quark-Lepton Complementarity Scenarios
Kathrin A. Hochmuth, Werner Rodejohann
We conduct a detailed analysis of the phenomenology of two predictive see-saw scenarios leading to Quark-Lepton Complementarity. In both cases we discuss the neutrino mixing observ…
Breaking of L_mu - L_tau Flavor Symmetry, Lepton Flavor Violation and Leptogenesis
Toshihiko Ota, Werner Rodejohann
A supersymmetric see-saw model obeying the flavor symmetry L_mu - L_tau, which naturally predicts quasi-degenerate neutrinos, is investigated. Breaking of the symmetry is introduce…
The Elements of the Neutrino Mass Matrix: Allowed Ranges and Implications of Texture Zeros
A. Merle, W. Rodejohann
We study the range of the elements of the neutrino mass matrix m_nu in the charged lepton basis. Neutrino-less double beta decay is sensitive to the ee element of m_nu. We then ana…
A Supersymmetric Contribution to the Neutrino Mass Matrix and Breaking of mu-tau Symmetry
Naoyuki Haba, Werner Rodejohann
Supersymmetry broken by anomaly mediation suffers from tachyonic slepton masses. A possible solution to this problem results in "decoupling", i.e., the first two generations of sfe…