Studying dark matter with MadDM: lines and loops

Journal of Physics Conference Series, vol. 2156, pp. 012073

Abstract

Abstract Automated tools for the computation of amplitudes and cross sections have become the backbone of phenomenological studies beyond the standard model. We present the latest developments in MadDM, a calculator of dark-matter observables based on MadGraph5_aMC@NLO. The new version enables the fully automated computation of loop-induced annihilation processes, relevant for indirect detection of dark matter. Of particular interest is the direct annihilation into photons, γγ, γX. These processes lead to monochromatic gamma-ray lines that are smoking-gun signatures for dark-matter annihilation in our Galaxy. MadDM computes the predictions for the expected photon fluxes near Earth and derives constraints from the gamma-ray line searches by Fermi-LAT and HESS. As an application, we present the implications for the parameter space of the Inert Doublet Model.

Authors 5

1. Daniele Massaro corresponding

   Istituto Nazionale di Fisica Nucleare, Sezione di Bologna · University of Bologna · UCLouvain · KU Leuven

   Affiliation as printed

   Centre for Cosmology, Particle Physics and Phenomenology (CP3), Université catholique de Louvain, Chemin du Cyclotron 2, B-1348 Louvain-la-Neuve, Belgium

   Dipartimento di Fisica e Astronomia, Alma Mater Studiorum - Università di Bologna, via Irnerio 46, 40126 Bologna, Italy

   INFN, Sezione di Bologna, viale Berti Pichat 6/2, 40127 Bologna, Italy

2. Chiara Arina

   UCLouvain

   Affiliation as printed

   Research Institute for Mathematics and Physics (IRMP), Université catholique de Louvain, Chemin du Cyclotron 2, B-1348 Louvain-la-Neuve, Belgium

3. Jan Heisig Aachen Institute for Theoretical Particle Physics and Cosmology

   RWTH Aachen University · UCLouvain · KU Leuven

   Affiliation as printed

   Centre for Cosmology, Particle Physics and Phenomenology (CP3), Université catholique de Louvain, Chemin du Cyclotron 2, B-1348 Louvain-la-Neuve, Belgium

   Institute for Theoretical Particle Physics and Cosmology, RWTH Aachen University, Sommerfeldstr. 16, D-52056 Aachen, Germany

4. Fabio Maltoni

   Istituto Nazionale di Fisica Nucleare, Sezione di Bologna · University of Bologna · UCLouvain · KU Leuven

   Affiliation as printed

   Centre for Cosmology, Particle Physics and Phenomenology (CP3), Université catholique de Louvain, Chemin du Cyclotron 2, B-1348 Louvain-la-Neuve, Belgium

   Dipartimento di Fisica e Astronomia, Alma Mater Studiorum - Università di Bologna, via Irnerio 46, 40126 Bologna, Italy

   INFN, Sezione di Bologna, viale Berti Pichat 6/2, 40127 Bologna, Italy

5. Olivier Mattelaer

   UCLouvain · KU Leuven

   Affiliation as printed

   Centre for Cosmology, Particle Physics and Phenomenology (CP3), Université catholique de Louvain, Chemin du Cyclotron 2, B-1348 Louvain-la-Neuve, Belgium