Leptogenesis in Smooth Hybrid Inflation
High Energy Physics - Phenomenology
2008-11-26 v2
Abstract
We present a concrete supersymmetric grand unified model based on the Pati-Salam gauge group SU(4)_c x SU(2)_L x SU(2)_R and leading naturally to smooth hybrid inflation, which avoids the cosmological disaster encountered in the standard hybrid inflationary scenario from the overproduction of monopoles at the end of inflation. Successful `reheating' which satisfies the gravitino constraint takes place after the termination of inflation. Also, adequate baryogenesis via a primordial leptogenesis occurs consistently with the solar and atmospheric neutrino oscillation data as well as the SU(4)_c symmetry.
Cite
@article{arxiv.hep-ph/0103229,
title = {Leptogenesis in Smooth Hybrid Inflation},
author = {R. Jeannerot and S. Khalil and G. Lazarides},
journal= {arXiv preprint arXiv:hep-ph/0103229},
year = {2008}
}
Comments
12 pages including 3 figures, version to appear in Phys. Lett. B