Lepton Flavor Violation in Complex SUSY Seesaw Models with Nearly Tribimaximal Mixing

Abstract

We survey the lepton flavor violation branching ratios Br(mu->e,gamma), Br(tau->mu,gamma), and Br(tau->e,gamma) in mSUGRA for a broad class of lepton mass matrix textures that give nearly tribimaximal lepton mixing. Small neutrino masses are generated by the type-I seesaw mechanism with non-degenerate right-handed neutrino masses. The textures exhibit a hierarchical mass pattern and can be understood from flavor models giving rise to large leptonic mixing. We study the branching ratios for the most general CP-violating forms of the textures. It is demonstrated that the branching ratios can be enhanced by 2-3 orders of magnitude as compared to the CP-conserving case. The branching ratios exhibit, however, a strong dependence on the choice of the phases in the Lagrangian which affects the significance of flavor models. In particular, for general CP-phases, the lepton flavor violating rates appear to be essentially uncorrelated with the possible high- and low-energy lepton mixing parameters, such as the reactor angle.

22 pages, 17 figures. Version to be published in JHEP

References in corpus (29)

• Flavour physics of leptons and dipole moments
• Parametrizing the lepton mixing matrix in terms of deviations from tri-bimaximal mixing
• Lepton Flavour Violation in Models with A4 Flavour Symmetry
• Near Tribimaximal Neutrino Mixing with Delta(27) Symmetry
• Impact of ${\theta }_{13}$ on Lepton Flavour Violating processes within SUSY Seesaw
• Collider aspects of flavour physics at high Q
• Neutrino mixing from the double tetrahedral group T^{\prime}
• The Seesaw Mechanism in Quark-Lepton Complementarity
• Probing minimal supergravity in the type-I seesaw mechanism with lepton flavour violation at the CERN LHC
• Low and High Energy Phenomenology of Quark-Lepton Complementarity Scenarios
• Deviations from Tri-bimaximal Neutrino Mixing in Type-II Seesaw and Leptogenesis
• Flavour violation at the LHC: type-I versus type-II seesaw in minimal supergravity
• Systematic Parameter Space Search of Extended Quark-Lepton Complementarity
• Group space scan of flavor symmetries for nearly tribimaximal lepton mixing
• Mapping out SU(5) GUTs with non-Abelian discrete flavor symmetries
• Probing deviations from tri-bimaximal mixing through ultra high energy neutrino signals
• Softly broken $\mu \leftrightarrow \tau$ symmetry in the minimal see-saw model
• Deviations from Tri-Bimaximality and Quark-Lepton Complementarity
• Group Theoretic Bases for Tribimaximal Mixing
• Nearly tri-bimaximal mixing in the S_3 flavour symmetry
• Leptonic CP Violation Induced by Approximately mu-tau Symmetric Seesaw Mechanism
• Fair scans of the seesaw. Consequences for predictions on LFV processes
• Using the e^{+/-} mu^{-/+} + E^{miss}_T signature in the search for supersymmetry and lepton flavour violation in neutralino decays
• Neutrino Oscillation Observables from Mass Matrix Structure
• Entangled maximal mixings in U_PMNS=U_l^dagger U_nu, and a connection to complex mass textures
• Introduction to leptogenesis
• Normal versus inverted hierarchical models within $\mu -\tau$ symmetry
• Lepton Flavor Violation at the LHC
• Supersymmetric Lepton Flavor Violation and Leptogenesis

Cited by in corpus (1)

• mu-->e+gamma Decay Rate in the MSSM with Minimal Flavour Violation