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Updated: Jun 29, 2026

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Strong upper limits on sterile neutrino warm dark matter
Hasan Yüksel1, John F Beacom, Casey R Watson
1Department of Physics, Ohio State University, Columbus, OH 43210, USA.
Abstract:
Sterile neutrinos are attractive dark matter candidates. Their parameter space of mass and mixing angle has not yet been fully tested despite intensive efforts that exploit their gravitational clustering properties and radiative decays. We use the limits on gamma-ray line emission from the Galactic center region obtained with the SPI spectrometer on the INTEGRAL satellite to set new constraints, which improve on the earlier bounds on mixing by more than 2 orders of magnitude, and thus strongly restrict a wide and interesting range of models.
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