Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8141955 | Physics of the Dark Universe | 2015 | 4 Pages |
Abstract
Dark matter particles annihilating into Standard Model fermions may be able to explain the recent observation of a gamma-ray excess in the direction of the Galactic Center. Recently, a hidden photon model has been proposed to explain this signal. Supplementing this model with a dipole moment operator and a small dark sector mass splitting allows a large cross section to a photon line while avoiding direct detection and other constraints. Comparing the line and continuum cross sections, we find that the line is suppressed only by the relative scales and couplings. Given current constraints on this ratio, a line discovery in the near future could point to a new scale Îâ¼O(1TeV), where we would expect to discover new charged particles. Moreover, such a line would also imply that dark matter can be visible in near-future direct detection experiments. (FERMILAB-PUB-14-205-A-T)
Keywords
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Physical Sciences and Engineering
Physics and Astronomy
Astronomy and Astrophysics
Authors
Samuel D. McDermott,