Baryon asymmetry from leptogenesis with four zero neutrino Yukawa textures

Abstract

The generation of the right amount of baryon asymmetry $\eta$ of the Universe from supersymmetric leptogenesis is studied within the type-I seesaw framework with three heavy singlet Majorana neutrinos $N_i(i=1,2,3)$ and their superpartners. We assume the occurrence of four zeroes in the neutrino Yukawa coupling matrix $Y_{\nu }$, taken to be $\mu \tau$ symmetric, in the weak basis where $N_i$ (with real masses $M_i>0$) and the charged leptons $l_{\alpha }(\alpha =e,\mu ,\tau )$ are mass diagonal. The quadrant of the single nontrivial phase, allowed in the corresponding light neutrino mass matrix $m_{\nu }$, gets fixed and additional constraints ensue from the requirement of matching $\eta$ with its observed value. Special attention is paid to flavor effects in the washout of the lepton asymmetry. We also comment on the role of small departures from high scale $\mu \tau$ symmetry due to RG evolution.

35 pages, no figure, Published Version

References in corpus (16)

• Leptogenesis
• Flavour Matters in Leptogenesis
• Flavour-Dependent Leptogenesis with Sequential Dominance
• Baryon Asymmetry of the Universe in the NuMSM
• Nonzero U_{e3}, CP violation and leptogenesis in a see-saw type softly broken A_4 symmetric model
• Grand unification of $\mu -\tau$ Symmetry
• Four Zero Neutrino Yukawa Textures in the Minimal Seesaw Framework
• Phenomenological consequences of four zero neutrino Yukawa textures
• A Generic Diagonalization of the 3X3 Neutrino Mass Matrix and Its Implications on the mu-tau Flavor Symmetry and Maximal CP Violation
• Soft breaking of $L_{\mu }-L_{\tau }$ symmetry: Light neutrino spectrum and Leptogenesis
• A Supersymmetric Contribution to the Neutrino Mass Matrix and Breaking of mu-tau Symmetry
• A direct link between neutrinoless double beta decay and leptogenesis in a seesaw model with $S_4$ symmetry
• Supersymmetric Leptogenesis
• Softly broken $\mu \leftrightarrow \tau$ symmetry in the minimal see-saw model
• Correlation between Leptonic CP Violation and mu-tau Symmetry Breaking
• Complex CKM matrix, spontaneous CP violation and generalized $\mu$-$\tau$ symmetry

Cited by in corpus (1)

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