Supersymmetric leptogenesis and light hidden sectors
Abstract
Thermal leptogenesis and supergravity are attractive scenarios for physics beyond the standard model. However, it is well known that the super-weak interaction of the gravitino often leads to problems with primordial nucleosynthesis in the standard scenario of matter parity conserving MSSM + three right-handed neutrinos. We will present and compare two related solutions to these problems: 1) The conflict between BBN and leptogenesis can be avoided in presence of a hidden sector with light supersymmetric particles which open new decay channels for the dangerous long-lived particles. 2) If there is a condensate in the hidden sector, such additional decay channels can be alternatively opened by dynamical breaking of matter parity in the hidden sector.
Cite
@article{arxiv.1009.5865,
title = {Supersymmetric leptogenesis and light hidden sectors},
author = {Christoph Weniger},
journal= {arXiv preprint arXiv:1009.5865},
year = {2011}
}
Comments
6 pages, 3 figures, Talk presented at PASCOS, Valencia, 19-23 July 2010