Low and High Energy Phenomenology of Quark-Lepton Complementary Scenarios

  • Kathrin A. Hochmutha, Werner Rodejohannb
  • Published 2006


We conduct a detailed analysis of the phenomenology of two predictive see-saw scenarios leading to Quark-Lepton Complementary. In both cases we discuss the neutrino mixing observables and their correlations, neutrinoless double beta decay and lepton flavor violating decays such as μ → eγ. We also comment on leptogenesis. The first scenario is disfavored on the level of one to two standard deviations, in particular due to its prediction for |Ue3|. Moreover, there can only be leptogenesis in highly fine-tuned situations, one of which corresponds to quasi-degenerate light neutrinos and sizable cancellations in neutrinoless double beta decay. The decays μ → eγ and τ → μγ are typically observable unless the SUSY masses approach the TeV scale. In the second scenario leptogenesis is impossible. It is however in perfect agreement with all oscillation data. The prediction for μ → eγ is in general too large, unless the SUSY masses are in the range of several TeV. In this case τ → eγ and τ → μγ are unobservable. email: hochmuth@mppmu.mpg.de email: werner rodejohann@ph.tum.de

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Cite this paper

@inproceedings{Hochmutha2006LowAH, title={Low and High Energy Phenomenology of Quark-Lepton Complementary Scenarios}, author={Kathrin A. Hochmutha and Werner Rodejohannb}, year={2006} }