Neutrino Masses, Leptogenesis and Decaying Dark Matter
High Energy Physics - Phenomenology
2010-03-26 v2
Abstract
We study a simple extension of the standard model to simultaneously explain neutrino masses, dark matter and the matter-antimatter asymmetry of the Universe. In our model, the baryon asymmetry is achieved by the leptogenesis mechanism, while the decaying dark matter with the lifetime of O(10^26 s) provides a natural solution to the electron and positron excesses in Fermi and PAMELA satellite experiments. In particular, we emphasize that our model is sensitive to the structure at the endpoint around 1 TeV of the Fermi data. In addition, some of new particles proposed in the model are within the reach at the near future colliders, such as the Large Hadron Collider.
Cite
@article{arxiv.0906.1646,
title = {Neutrino Masses, Leptogenesis and Decaying Dark Matter},
author = {Chuan-Hung Chen and Chao-Qiang Geng and Dmitry V. Zhuridov},
journal= {arXiv preprint arXiv:0906.1646},
year = {2010}
}
Comments
11 pages, 5 figures; revised version