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Integral X-ray constraints on sub-GeV Dark Matter

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arxiv 2007.11493 v5 pith:YRG67OYS submitted 2020-07-22 hep-ph astro-ph.CO

Integral X-ray constraints on sub-GeV Dark Matter

classification hep-ph astro-ph.CO
keywords constraintsdarkintegralmatterx-rayaboveboundschallenged
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Light Dark Matter (DM), defined here as having a mass between 1 MeV and about 1 GeV, is an interesting possibility both theoretically and phenomenologically, at one of the frontiers of current progress in the field of DM searches. Its indirect detection via gamma-rays is challenged by the scarcity of experiments in the MeV-GeV region. We look therefore at lower-energy X-ray data from the Integral telescope, and compare them with the predicted DM flux. We derive bounds which are competitive with existing ones from other techniques. Crucially, we include the contribution from inverse Compton scattering on galactic radiation fields and the CMB, which leads to much stronger constraints than in previous studies for DM masses above 20 MeV.

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Cited by 4 Pith papers

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  2. Constraining light dark matter in vector-scalar portals with COSI and AMEGO-X

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    Projects COSI and AMEGO-X sensitivities to sub-GeV DM in vector-scalar portals, finding COSI leading in some regions beyond CMB limits and AMEGO-X covering most continuum cases.

  3. INTEGRAL, eROSITA and Voyager Constraints on Light Bosonic Dark Matter: ALPs, Dark Photons, Scalars, $B-L$ and $L_{i}-L_{j}$ Vectors

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    This work sets new upper limits on decay lifetimes and couplings for axion-like particles, dark photons, scalars, and B-L or L_i-L_j vector bosons using 511 keV line, X-ray continuum, and cosmic-ray flux observations.

  4. Shedding Stray Light on Decaying Light Dark Matter: Constraints from NuSTAR X-ray Observations

    hep-ph 2026-06 unverdicted novelty 4.0

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