Baryogenesis via leptogenesis in multi-field inflation

Abstract

In multi-field reheating after modular $j$-inflation we investigate the conditions under which baryogenesis via non-thermal leptogenesis can be successfully realized. We introduce three heavy right-handed neutrinos to the non-supersymmetric Standard Model of particle physics, assuming hierarchical neutrino masses. Considering a typical mass for the first right-handed neutrino of the order of $10^{11}GeV$, suggested from the seesaw mechanism and also from concrete $SO(10)$ grand unification models, we obtain the allowed parameter space for viable baryogenesis. An upper bound for the inflaton mass as well as a lower bound for its branching ratio to the pair of lightest right-handed neutrinos are found and reported.

6 pages, 4 figures, current version accepted for publication in Eur. Phys. J. C

References in corpus (3)

• Natural Inflation: status after WMAP 3-year data
• Modular Inflation Observables and $j$-Inflation Phenomenology
• Multifield Reheating after Modular $j$-Inflation

Cited by in corpus (5)

• Reheating in small-field inflation on the brane: The Swampland Criteria and observational constraints in light of the PLANCK 2018 results
• Modular Inflation at Higher Level $N$
• Contribution of the chiral vortical effect to the evolution of the hypermagnetic field and the matter-antimatter asymmetry in the early Universe
• Entropy Production in the Inflationary Epoch Using the Gouy-Stodola Theorem
• Scaling behavior of observables as a model characteristic in multifield inflation