Non-minimal sneutrino inflation, Peccei-Quinn phase transition and non-thermal leptogenesis
Date
2011ISSN
1475-7516Source
Journal of Cosmology and Astroparticle PhysicsVolume
2011Issue
02Pages
019.1-019.21Google Scholar check
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We consider a phenomenological extension of the minimal supersymmetric standard model which incorporates non-minimal chaotic inflation, driven by a quartic potential associated with the lightest right-handed sneutrino. Inflation is followed by a Peccei-Quinn phase transition based on renormalizable superpotential terms, which resolves the strong CP and μ problems of the minimal supersymmetric standard model provided that one related parameter of the superpotential is somewhat small. Baryogenesis occurs via non-thermal leptogenesis, which is realized by the inflaton decay. Confronting our scenario with the current observational data on the inflationary observables, the baryon assymetry of the universe, the gravitino limit on the reheating temperature and the upper bound on the light neutrino masses, we constrain the effective Yukawa coupling involved in the decay of the inflaton to relatively small values and the inflaton mass to values lower than 1012GeV. © 2011 IOP Publishing Ltd and SISSA.