Indirect searches for dark matter bound state formation and level transitions
Indirect searches for dark matter (DM) have conventionally been applied to the products of DM annihilation or decay. If DM couples to light force carriers, however, it can be captured into bound states via dissipation of energy that may yield detectable signals. We extend the indirect searches to...
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| Format: | Article |
| Language: | English |
| Published: |
SciPost
2020-11-01
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| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.9.5.068 |
| Summary: | Indirect searches for dark matter (DM) have conventionally been applied to
the products of DM annihilation or decay. If DM couples to light force
carriers, however, it can be captured into bound states via dissipation of
energy that may yield detectable signals. We extend the indirect searches to DM
bound state formation and transitions between bound levels, and constrain the
emission of unstable dark photons. Our results significantly refine the
predicted signal flux that could be observed in experiments. As a concrete
example, we use Fermi-LAT dwarf spheroidal observations to obtain constraints
in terms of the dark photon mass and energy which we use to search for the
formation of stable or unstable bound states. |
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| ISSN: | 2542-4653 |