- Novel spectral features in MeV gamma rays from dark matter
- Physical Review D
- Volume | Issue number
- 95 | 4
- Article number
- Number of pages
- Document type
- Faculty of Science (FNWI)
- Institute for Theoretical Physics Amsterdam (ITFA)
Astrophysical searches for gamma rays are one of the main strategies to probe the annihilation or decay of dark matter particles.We present a new class of distinct sub-GeV spectral features that generically appear in kinematical situations where the available center-of-mass energy in such processes is just above threshold to produce excited meson states. Using a Fisher forecast with realistic astrophysical backgrounds, we demonstrate that for upcoming experiments like e-ASTROGAM and ComPair these signals can turn out to be the smoking gun in the search for particle dark matter.
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- © 2017 American Physical Society
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