2012/04/20 by Guillaume Chalons, Chalons, Guillaume · 1 citation
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #astro-ph.CO #hep-ph
paper · pdf · doi:10.48550/arxiv.1204.4591
4 pages, 3 figures, talk at Moriond 2012 conference on EW Interactions and Unified Theories
arxiv created 2012/04/20 · arxiv updated 2012/04/23
We present the computation of the loop-induced self-annihilation of dark matter particles into two photons in the framework of the NMSSM. This process is a theoretically clean observable with a "smoking-gun" signature but is experimentally very challenging to detect. The rates were computed with the help of the SloopS program, an automatic code initially designed for the evaluation of processes at the one-loop level in the MSSM. We focused on a light neutralino scenario and discuss how the signal can be enhanced in the NMSSM with respect to the MSSM and then compared with the present limits given by the dedicated search of the FERMI-LAT satellite on the monochromatic gamma lines.