Flavour Symmetries and Kahler Operators

Abstract

Any supersymmetric mechanism to solve the flavour puzzle would generate mixing both in the superpotential Yukawa couplings and in the Kahler potential. In this paper we study, in a model independent way, the impact of the nontrivial structure of the Kahler potential on the physical mixing matrix, after kinetic terms are canonically normalized. We undertake this analysis both for the quark sector and the neutrino sector. For the quark sector, and in view of the experimental values for the masses and mixing angles, we find that the effects of canonical normalization are subdominant. On the other hand, for the leptonic sector we obtain different conclusions depending on the spectrum of neutrinos. In the hierarchical case we obtain similar conclusion as in the quark sector, whereas in the degenerate and inversely hierarchical case, important changes in the mixing angles could be expected.

22 pages, LaTeX

References in corpus (5)

• Running Neutrino Masses, Mixings and CP Phases: Analytical Results and Phenomenological Consequences
• Status of three-neutrino oscillations after the SNO-salt data
• Supersymmetric Froggatt-Nielsen Models with Baryon- and Lepton-Number Violation
• Democratic (S)fermions and Lepton Flavor Violation
• Yukawa Textures and the mu-term

Cited by in corpus (18)

• Fermion Masses and Mixings in a S4 Based Model
• Lepton Flavour Violation in Models with A4 Flavour Symmetry
• A SUSY GUT of Flavour with S4 x SU(5) to NLO
• Enlarging the window for radiative leptogenesis
• Baryon Triality and Neutrino Masses from an Anomalous Flavor U(1)
• Kahler corrections and softly broken family symmetries
• Study of theory and phenomenology of some classes of family symmetry and unification models
• Invariant see-saw models and sequential dominance
• Predictivity of models with spontaneously broken non-Abelian discrete flavor symmetries
• Controlled flavor violation in the MSSM from a unified $\Delta (27)$ flavor symmetry
• PeV Scale Right Handed Neutrino Dark Matter in $S_4$ Flavor Symmetric extra U(1) model
• Lepton Flavor Violation and Neutrino Masses from $A_5$ and CP in the Non-Universal MSSM
• Phenomenology of S_4 Flavor Symmetric extra U(1) model
• Yukawa interactions, flavor symmetry, and non-canonical Kähler potential
• Warped Alternatives to Froggatt-Nielsen Models
• Flavor structure from `canonical' Yukawa interactions and `emergent' kinetic terms
• Chasing after flavor symmetries of quarks from bottom up
• A bottom-up approach to fermion mass hierarchy: a case with vector-like fermions