We consider a spin~-~3/2 fermionic dark matter candidate (DM) interacting with Standard Model fermions through a vector mediator in the s-channel. We find that for pure vector couplings almost the entire parameter space of the DM and mediator mass consistent with the observed relic density is ruled out by the direct detection observations through DM-nucleon elastic scattering cross-sections. In contrast, for pure axial-vector coupling, the most stringent constraints are obtained from mono-jet searches at the Large Hadron Collider.
@article{arxiv.1608.08958,
title = {Minimal Spin-3/2 Dark Matter in a simple $s$-channel model},
author = {Mohammed Omer Khojali and Ashok Goyal and Mukesh Kumar and Alan S. Cornell},
journal= {arXiv preprint arXiv:1608.08958},
year = {2016}
}
Comments
8 pages, 5 figures, Version accepted for publication in EPJC