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Thermal Relic Targets with Exponentially Small Couplings

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arxiv 1906.09269 v1 pith:FISV3UU3 submitted 2019-06-21 hep-ph astro-ph.COhep-ex

Thermal Relic Targets with Exponentially Small Couplings

classification hep-ph astro-ph.COhep-ex
keywords couplingdarkmatterproducedthermalannihilationsexponentiallyinelastic
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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Cited by 3 Pith papers

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