University of Hertfordshire

From the same journal

From the same journal

By the same authors

Indirect Detection of Composite (Asymmetric) Dark Matter

Research output: Contribution to journalArticle


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Original languageEnglish
JournalPhysical Review Letters
Publication statusIn preparation - 1 Aug 2019


Dark Matter can form bound states upon the emission of quanta of energy equal to the binding energy. The rate of this process is large for strongly-interacting Dark Matter, and further enhanced by long distance effects. The resulting monochromatic and diffuse $\gamma$-rays can be tested in indirect detection experiments. If Dark Matter has electroweak charge, indirect signals include multiple observable photon lines for masses in the TeV range. Else if it couples only via a dark photon portal, diffuse spectra from dwarf galaxies and CMB reionization set powerful limits for masses below a TeV. This mechanism provides a powerful means of probing Asymmetric Dark Matter today.


5 pages, 4 figures

ID: 19154865