Non-zero U_{e3} and TeV-Leptogenesis through A_4 symmetry breaking

Abstract

We consider an effective theory with an $SU(2)\times U(1)\times A_4\times Z_2\times Z_4$ symmetry and investigate the possibility of a linking TeV-leptogenesis with a reactor angle $|U_{e3}|$ through spontaneous $A_4$ symmetry breaking which is at a scale higher than electroweak scale under the framework of radiative seesaw. It has been shown that tri-bimaximal(TBM) can be obtained by forging vacuum expectation value (VEV) alignment of the $A_4$. Especially, one $A_4$ triplet scalar field with cut-off scale $\Lambda$ is added in neutrino Yukawa sector, which is responsible for the deviation of the exact TBM, to explain leptogenesis as well as a non-zero $|U_{e3}|$. Above the scale of $\Lambda$ the leptonic Yukawa sectors will lead to the exact TBM. We analyze possible spectrums of light neutrinos and their flavor mixing angles corresponding to heavy Majorana neutrino mass ordering, and show that non-resonance leptogenesis at TeV-scale constrained by low energy data is achievable, both analytically as well as numerically. We show that only normal hierarchical spectrum of light neutrino would be strongly favored by the current Wilkinson Microwave Anisotropy Probe (WMAP) data, and also show that a relatively large $|U_{e3}|$ corresponds to the value of baryon asymmetry $6.2\times 10^{-10}$.

32 pages, 21 figures, 3 tables. Final version to appear in Phys. Rev. D

References in corpus (14)

• Phenomenology with Massive Neutrinos
• Flavour Matters in Leptogenesis
• Leptogenesis and Low Energy CP Violation in Neutrino Physics
• Connecting Low Energy Leptonic CP-violation to Leptogenesis
• Flavour-Dependent Leptogenesis with Sequential Dominance
• A new bridge between leptonic CP violation and leptogenesis
• Common Origin of Neutrino Mass, Dark Matter, and Baryogenesis
• Tri-bimaximal Neutrino Mixing from A(4) and θ_{13} \sim θ_C
• A SUSY A4 model for fermion masses and mixings
• Nonzero U_{e3}, CP violation and leptogenesis in a see-saw type softly broken A_4 symmetric model
• Resonant leptogenesis and tribimaximal leptonic mixing with A4 symmetry
• A dynamical approach to link low energy phases with leptogenesis
• Neutrino oscillations: present status and outlook
• $\mu -\tau$ Symmetry and Radiatively Generated Leptogenesis

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