TeV Scale Leptogenesis in B-L Model with Alternative Cosmologies

Abstract

In TeV scale B-L extension of the standard model with inverse seesaw, the Yukawa coupling of right-handed neutrinos can be of order one. This implies that the out of equilibrium condition for leptogenesis within standard cosmology is not satisfied. We provide two scenarios for overcoming this problem and generating the desired value of the baryon asymmetry of the Universe. The first scenario is based on extra-dimensional braneworld effects that modify the Friedman equation. We show that in this case the value of the baryon asymmetry of the Universe constrains the five-dimensional Planck mass to be of order O(100) TeV. In the second scenario a non-thermal right-handed neutrino produced by the decay of inflaton is assumed. We emphasize that in this case, it is possible to generate the required baryon asymmetry of the Universe for TeV scale right-handed neutrinos.

13 pages, 2 figures

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• Lorentz Invariance Violation Effects on Gamma-Gamma Absorption and Compton Scattering
• Coherent Flavour Oscillation and CP Violating Parameter in Thermal Resonant Leptogenesis
• Superradiant Leptogenesis
• WIMPy Leptogenesis in Non-Standard Cosmologies
• Simple inflationary models in Gauss-Bonnet brane-world cosmology
• $B-L$ model with $A_4\times Z_3\times Z_4$ symmetry for $3+1$ active$-$sterile neutrino mixing
• Simple brane-world inflationary models in light of BICEP2
• FIMP dark matter candidate(s) in a $B-L$ model with inverse seesaw mechanism
• Simple brane-world inflationary models: an update
• Leptogenesis in an extended seesaw model with $U(1{)}_{B-L}$ symmetry