Neutrino Masses, Leptogenesis and Decaying Dark Matter

Details Neutrino Masses, Leptogenesis and Decaying Dark Matter Neutrino Masses, Leptogenesis and Decaying Dark Matter

2009-06-09

arxiv.org/abs/0906.1646v2

JCAP 0910:001,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 5 figures; revised version

Scientific paper

10.1088/1475-7516/2009/10/001

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.

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