Gamma-ray observations impose an upper bound of order 1 GeV on the mass of a photon-coupled scalar dark matter candidate produced via thermal misalignment.
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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.
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Gamma-Ray Signatures of Thermal Misalignment Dark Matter
Gamma-ray observations impose an upper bound of order 1 GeV on the mass of a photon-coupled scalar dark matter candidate produced via thermal misalignment.
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INTEGRAL, eROSITA and Voyager Constraints on Light Bosonic Dark Matter: ALPs, Dark Photons, Scalars, $B-L$ and $L_{i}-L_{j}$ Vectors
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.