Simplified Dirac Dark Matter Models and Gamma-Ray Lines
Abstract
We investigate simplified dark matter models where the dark matter candidate is a Dirac fermion charged only under a new gauge symmetry. In this context one can understand dynamically the stability of the dark matter candidate and the annihilation through the new gauge boson is not velocity suppressed. We present the simplest Dirac dark matter model charged under the local B-L gauge symmetry. We discuss in great detail the theoretical predictions for the annihilation into two photons, into the Standard Model Higgs and a photon, and into the Z gauge boson and a photon. Our analytical results can be used for any Dirac dark matter model charged under an Abelian gauge symmetry. The numerical results are shown in the B-L dark matter model. We discuss the correlation between the constraints on the model from collider searches and dark matter experiments.
Keywords
Cite
@article{arxiv.1506.05107,
title = {Simplified Dirac Dark Matter Models and Gamma-Ray Lines},
author = {Michael Duerr and Pavel Fileviez Perez and Juri Smirnov},
journal= {arXiv preprint arXiv:1506.05107},
year = {2015}
}
Comments
23 pages, 7 figures, v2: title changed, minor modifications, version to appear in PRD