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

Chiara Arina; Jan Heisig; Fabio Maltoni; Daniele Massaro; Olivier Mattelaer

doi:10.1140/epjc/s10052-023-11377-2

2023 Impact factor 4.2

Particles and Fields

Open Access

Eur. Phys. J. C (2023) 83: 241
https://doi.org/10.1140/epjc/s10052-023-11377-2

Special Article - Tools for Experiment and Theory

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

Chiara Arina¹^,2, Jan Heisig¹^,3^b, Fabio Maltoni¹^,4^,5, Daniele Massaro¹^,4^,5 and Olivier Mattelaer¹

¹ Centre for Cosmology, Particle Physics and Phenomenology, Université catholique de Louvain, Chemin du Cyclotron 2, 1348, Louvain-la-Neuve, Belgium
² Research Institute for Mathematics and Physics, Université catholique de Louvain, Chemin du Cyclotron 2, 1348, Louvain-la-Neuve, Belgium
³ Institute for Theoretical Particle Physics and Cosmology, RWTH Aachen University, Sommerfeldstr. 16, 52056, Aachen, Germany
⁴ Dipartimento di Fisica e Astronomia, Alma Mater Studiorum-Università di Bologna, via Irnerio 46, 40126, Bologna, Italy
⁵ INFN, Sezione di Bologna, viale Berti Pichat 6/2, 40127, Bologna, Italy

^b heisig@physik.rwth-aachen.de

Received: 12 April 2022
Accepted: 2 March 2023
Published online: 22 March 2023

Abstract

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 $γ X$ $\gamma X$ , where $X = γ, Z, h$ $X=\gamma , Z, h$ 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.

© The Author(s) 2023

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