Soft Gamma Rays from Heavy WIMPs
High Energy Physics - Phenomenology
2016-09-14 v2 High Energy Astrophysical Phenomena
Abstract
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.
Cite
@article{arxiv.1605.05327,
title = {Soft Gamma Rays from Heavy WIMPs},
author = {Manuel Ernst Krauss and Toby Opferkuch and Florian Staub and Martin Wolfgang Winkler},
journal= {arXiv preprint arXiv:1605.05327},
year = {2016}
}
Comments
8 pages, 8 figures; v2: focus on gamma ray excess, matches published version