Deviations from Tri-bimaximal Neutrino Mixing in Type-II Seesaw and Leptogenesis

Abstract

Current experimental data allow the zero value for one neutrino mass, either m_1 = 0 or m_3 = 0. This observation implies that a realistic neutrino mass texture can be established by starting from the limit (a) m_1 = m_2 = 0 and m_3 \neq 0 or (b) m_1 = m_2 \neq 0 and m_3 = 0. In both cases, we may introduce a particular perturbation which ensures the resultant neutrino mixing matrix to be the tri-bimaximal mixing pattern or its viable variations with all entries being formed from small integers and their square roots. We find that it is natural to incorporate this kind of neutrino mass matrix in the minimal Type-II seesaw model with only one heavy right-handed Majorana neutrino N in addition to the SU(2)_L Higgs triplet Δ_L. We show that it is possible to account for the cosmological baryon number asymmetry in the m_3 =0 case via thermal leptogenesis, in which the one-loop vertex correction to N decays is mediated by Δ_L and the CP-violating asymmetry of N decays is attributed to the electron flavor.

RevTeX 14 pages, 2 figures. Title and authors changed, and discussions on the minimal type-II seesaw and leptogenesis added. Accepted for publication in Phys. Rev. D

References in corpus (18)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Flavour Matters in Leptogenesis
• Connecting Low Energy Leptonic CP-violation to Leptogenesis
• Flavoured leptogenesis: a successful thermal leptogenesis with N_1 mass below 10^8 GeV
• Flavour-Dependent Leptogenesis with Sequential Dominance
• Neutrino Masses, Lepton Flavor Mixing and Leptogenesis in the Minimal Seesaw Model
• Twisted Flavors and Tri/bi-Maximal Neutrino Mixing
• A new bridge between leptonic CP violation and leptogenesis
• A Minimal Type II Seesaw Model
• S_3 Symmetry and Neutrino Masses and Mixings
• Grand unification of $\mu -\tau$ Symmetry
• Towards Determination of the Initial Flavor Composition of Ultrahigh-energy Neutrino Fluxes with Neutrino Telescopes
• Flavor Symmetry and Vacuum Aligned Mass Textures
• $\mu -\tau$ Symmetry and Radiatively Generated Leptogenesis
• Flavour-Dependent Type II Leptogenesis
• Friedberg-Lee Symmetry Breaking and Its Prediction for theta_13
• Tribimaximal Neutrino Mixing and a Relation Between Neutrino- and Charged Lepton-Mass Spectra
• Neutrino Mixing: from the Broken μ-τSymmetry to the Broken Friedberg-Lee Symmetry

Cited by in corpus (19)

• Parametrizing the lepton mixing matrix in terms of deviations from tri-bimaximal mixing
• Correlation between the Charged Current Interactions of Light and Heavy Majorana Neutrinos
• On the origin of neutrino flavour symmetry
• Implications of Leptonic Unitarity Violation at Neutrino Telescopes
• Deviations from Tri-bimaximal Mixing: Charged Lepton Corrections and Renormalization Group Running
• Correlative signatures of heavy Majorana neutrinos and doubly-charged Higgs bosons at the Large Hadron Collider
• Third Family Corrections to Quark and Lepton Mixing in SUSY Models with non-Abelian Family Symmetry
• Group space scan of flavor symmetries for nearly tribimaximal lepton mixing
• Measurable Neutrino Mass Scale in A4 x SU(5)
• Non-unitary deviation from the tri-bimaximal lepton mixing and its implications on neutrino oscillations
• Theoretical Overview of Neutrino Properties
• Vacuum misalignment corrections to tri-bimaximal mixing and form dominance
• Interference bands in decays of doubly-charged Higgs bosons to dileptons in the minimal type-II seesaw model at the TeV scale
• Neutrino mass and leptogenesis in a hybrid seesaw model with a spontaneously broken CP
• Normal versus inverted hierarchical models within $\mu -\tau$ symmetry
• Lepton Flavor Violation in Complex SUSY Seesaw Models with Nearly Tribimaximal Mixing
• The Minimal Type-II Seesaw Model and Flavor-dependent Leptogenesis
• Deviation from Tri-Bimaximal Neutrino mixing from the Charged Lepton Sector
• On the ambiguities in the tri-bimaximal mixing matrix and corresponding charged lepton corrections