Inflation, leptogenesis, and Yukawa quasiunification within a supersymmetric left-right model
Armillis
R
author
Lazarides
G
author
Pallis
C
author
2014
English
A simple extension of the minimal left-right symmetric supersymmetric grand unified theory model is constructed by adding two pairs of superfields. This naturally violates the partial Yukawa unification predicted by the minimal model. After including supergravity corrections, we find that this extended model naturally supports hilltop F-term hybrid inflation along its trivial inflationary path with only a very mild tuning of the initial conditions. With a convenient choice of signs of the terms in the Kahler potential, we can reconcile the inflationary scale with the supersymmetric grand unified theory scale. All the current data on the inflationary observables are readily reproduced. Inflation is followed by nonthermal leptogenesis via the decay of the right-handed neutrinos emerging from the decay of the inflaton, and any possible washout of the lepton asymmetry is avoided thanks to the violation of partial Yukawa unification. The extra superfields also assist us in reducing the reheat temperature so as to satisfy the gravitino constraint. The observed baryon asymmetry of the universe is naturally reproduced consistently with the neutrino oscillation parameters.
WOS:000334308100002
exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1760), last updated on Fri, 16 May 2014 11:59:35 +0000
text
http://arxiv.org/abs/1309.6986
http://arxiv.org/abs/1309.6986
10.1103/PhysRevD.89.065032
Armillis_etal2014
Physical Review D
Phys. Rev. D
2014
Amer Physical Soc
continuing
periodical
academic journal
89
6
065032
22pp
1550-7998