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Updated: May 13, 2026

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Sterile neutrinos as the origin of dark and baryonic matter
Laurent Canetti1, Marco Drewes, Mikhail Shaposhnikov
1Institute de Théorie des Phénoménes Physiques EPFL, CH-1015 Lausanne, Switzerland.
Abstract:
We demonstrate for the first time that three sterile neutrinos alone can simultaneously explain neutrino oscillations, the observed dark matter, and the baryon asymmetry of the Universe without new physics above the Fermi scale. The key new point of our analysis is leptogenesis after sphaleron freeze-out, which leads to resonant dark matter production, evading thus the constraints on sterile neutrino dark matter from structure formation and x-ray searches. We identify the range of sterile neutrino properties that is consistent with all known constraints. We find a domain of parameters where the new particles can be found with present day experimental techniques, using upgrades to existing experimental facilities.
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