Hierarchical Neutrino Mass Matrices, CP violation and Leptogenesis

Abstract

In this work we study examples of hierarchical neutrino mass matrices inspired by family symmetries, compatible with experiments on neutrino oscillations, and for which there is a connection among the low energy CP violation phase associated to neutrino oscillations, the phases appearing in the amplitude of neutrinoless double beta decay, and the phases relevant for leptogenesis. In particular, we determine the predictions from a texture based on an underlying SU(3) family symmetry together with a GUT symmetry, and a strong hierarchy for the masses of the heavy right handed Majorana masses. We also give some examples of inverted hierarchies of neutrino masses, which may be motivated in the context of U(1) family symmetries.

34 pages. Replaced with published version -typos, corrections and references added

References in corpus (11)

• First Results from KamLAND: Evidence for Reactor Anti-Neutrino Disappearance
• Cosmological Sign of Neutrino CP Violation
• Probing the seesaw mechanism with neutrino data and leptogenesis
• Minimal Scenarios for Leptogenesis and CP Violation
• Symmetries and fermion masses
• Leptogenesis-MNS Link in Unified Models with Natural Neutrino Mass Hierarchy
• Models of Neutrino Masses: Anarchy versus Hierarchy
• Neutrino mass matrix: inverted hierarchy and CP violation
• Lepton Flavour Violation in the Constrained MSSM with Natural Neutrino Mass Hierarchy
• Non-thermal leptogenesis with almost degenerate superheavy neutrinos
• Inverting the seesaw formula

Cited by in corpus (15)

• Theory of Neutrinos: A White Paper
• Models of Neutrino Masses and Mixings
• Spontaneous CP violation and Non-Abelian Family Symmetry in SUSY
• Leptogenesis and $\mu -\tau$ symmetry
• Another Look at Minimal Lepton Flavour Violation, l_i -> l_j gamma, Leptogenesis, and the Ratio M_nu/ Lambda_LFV
• Enlarging the window for radiative leptogenesis
• Leptonic CP Violation and Neutrino Mass Models
• Leptogenesis, Yukawa Textures and Weak Basis Invariants
• Study of theory and phenomenology of some classes of family symmetry and unification models
• Leptogenesis and a Jarlskog Invariant
• Leptogenesis in Minimal Left-Right Symmetric Models
• Supersymmetric Grand Unification and Lepton Universality in K-> l νDecays
• Leptogenesis from the Asymmetric Texture
• Can One Phase Induce All CP Violations Including Leptogenesis?
• CP and Lepton-Number Violation in GUT Neutrino Models with Abelian Flavour Symmetries