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Indirect searches for dark matter bound state formation and level transitions

by Iason Baldes, Francesca Calore, Kalliopi Petraki, Vincent Poireau, Nicholas L. Rodd

Submission summary

As Contributors: Iason Baldes · Vincent Poireau
Arxiv Link: (pdf)
Date submitted: 2020-08-07 11:37
Submitted by: Baldes, Iason
Submitted to: SciPost Physics
Discipline: Physics
Subject area: High-Energy Physics - Phenomenology


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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Submission 2007.13787v2 on 7 August 2020

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