Affleck-Dine leptogenesis via multiscalar evolution in a supersymmetric seesaw model
High Energy Physics - Phenomenology
2008-11-26 v2
Abstract
A leptogenesis scenario in a supersymmetric standard model extended with introducing right-handed neutrinos is reconsidered. Lepton asymmetry is produced in the condensate of a right-handed sneutrino via the Affleck-Dine mechanism. The LH_u direction develops large value due to a negative effective mass induced by the right-handed sneutrino condensate through the Yukawa coupling of the right-handed neutrino, even if the minimum during the inflation is fixed at the origin. The lepton asymmetry is nonperturbatively transfered to the LH_u direction by this Yukawa coupling.
Keywords
Cite
@article{arxiv.0708.2238,
title = {Affleck-Dine leptogenesis via multiscalar evolution in a supersymmetric seesaw model},
author = {Masato Senami and Tsutomu Takayama},
journal= {arXiv preprint arXiv:0708.2238},
year = {2008}
}
Comments
19 pages, 3 figures. Revised version for publication. The model was modified to fix some problems