2016/05/31 by Manuel E. Krauss, Manuel Ernst Krauss, Toby Opferkuch +2
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Boson #Dark Matter and Cosmic Phenomena #Gamma ray #Higgs boson #Large Hadron Collider #Lepton #Neutralino #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quark #astro-ph.HE #hep-ph
paper · pdf · doi:10.1016/j.dark.2016.08.004
published as Phys.Dark Univ. 14 (2016) 29-34 · 8 pages, 8 figures; v2: focus on gamma ray excess, matches published version
openalex publication_date 2016/09/09 · arxiv created 2016/09/13 · arxiv updated 2016/09/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We propose an explanation of the galactic center gamma ray excess by supersymmetric WIMPs as heavy as 500 GeV. The lightest neutralino annihilates into vector-like leptons or quarks which cascade decay through intermediate Higgs bosons. Due to the long decay chains, the gamma ray spectrum is much softer than naively expected and peaks at GeV energies. The model predicts correlated diboson and dijet signatures to be tested at the LHC.