Indirect dark-matter detection with MadDM v3.2-Lines and Loops

Automated tools for the computation of particle physics' processes have become the backbone of phenomenological studies beyond the standard model. Here, we present MADDM v3.2. This release enables the fully automated computation of loop-induced dark-matter annihilation processes, relevant for indirect detection observables. Special emphasis lies on the annihilation into ? X, where X = ?, Z, h or any new particle even under the dark symmetry. These processes lead to the sharp spectral feature of monochromatic gamma lines - a smoking-gun signature of dark matter in our Galaxy. MADDM provides the predictions for the respective fluxes near-Earth and derives constraints from the gamma-ray line searches by Fermi-LAT and HESS. As an application, we discuss the implications for the viable parameter space of a top-philic t-channel mediator model and the inert doublet model.

Automated summary

Automated tools, such as MADDM v3.2, are essential for computing particle physics processes beyond the standard model and are particularly useful for studying dark matter annihilation. MADDM v3.2 can automatically calculate loop-induced annihilation processes into various final states, including monochromatic gamma lines, which are a distinctive signature of dark matter. The tool provides predictions for near-Earth fluxes and constraints derived from gamma-ray line searches conducted by Fermi-LAT and HESS. We also discuss the implications for specific models, such as the top-philic t-channel mediator model and the inert doublet model.