Using CTAO projected line sensitivity, the paper forecasts lower bounds on effective dark matter interaction scales above 10 TeV for TeV mass dark matter, with direct detection dominating the fermionic dipole operator.
Current and Future Constraints on Dark Matter from Prompt and Inverse-Compton Photon Emission in the Isotropic Diffuse Gamma-ray Background
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abstract
We perform a detailed examination of current constraints on annihilating and decaying dark matter models from both prompt and inverse-Compton emission photons, including both model-dependent and model-independent bounds. We also show that the observed isotropic diffuse gamma-ray background (DGRB), which provides one of the most conservative constraints on models of annihilating weak-scale dark matter particles, may enhance its sensitivity by a factor of ~2 to 3 (95% C.L.) as the Fermi-LAT experiment resolves DGRB contributing blazar sources with five years of observation. For our forecasts, we employ the results of constraints to the luminosity-dependent density evolution plus blazar spectral energy distribution sequence model, which is constrained by the DGRB and blazar source count distribution function.
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Constraining Effective Field Theories for dark matter candidates annihilating into gamma-ray lines with CTAO
Using CTAO projected line sensitivity, the paper forecasts lower bounds on effective dark matter interaction scales above 10 TeV for TeV mass dark matter, with direct detection dominating the fermionic dipole operator.