Journal
PHYSICAL REVIEW LETTERS
Volume 124, Issue 15, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.124.151801
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Funding
- DOE Grant [DE-AC02-76SF00515]
- NSF CAREER Grant [PHY-1554858]
- NSF grant [PHY-1915409]
- Munich Institute for Astro-and Particle Physics (MIAPP) - Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy [EXC-2094-390783311]
- KITP, through the National Science Foundation [NSF PHY-1748958]
- NSF [PHY-1607611]
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If dark matter was produced in the early Universe by the decoupling of its annihilations into known particles, there is a sharp experimental target for the size of its coupling. We show that if dark matter was produced by inelastic scattering against a lighter particle from the thermal bath, then its coupling can be exponentially smaller than the coupling required for its production from annihilations. As an application, we demonstrate that dark matter produced by inelastic scattering against electrons provides new thermal relic targets for direct detection and fixed target experiments.
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