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Title: Fermionic dark matter in a simple t-channel model

Abstract

We consider a fermionic dark matter (DM) particle in renormalizable Standard Model (SM) gauge interactions in a simple t-channel model. The DM particle interactions with SM fermions is through the exchange of scalar and vector mediators which carry colour or lepton number. In the case of coloured mediators considered in this study, we find that if the DM is thermally produced and accounts for the observed relic density almost the entire parameter space is ruled out by the direct detection observations. The bounds from the monojet plus missing energy searches at the Large Hadron Collider are less stringent in this case. In contrast for the case of Majorana DM, we obtain strong bounds from the monojet searches which rule out DM particles of mass less than about a few hundred GeV for both the scalar and vector mediators.

Authors:
;  [1]
  1. National Institute for Theoretical Physics, School of Physics and Mandelstam Institute for Theoretical Physics, University of the Witwatersrand, Johannesburg, Wits 2050 (South Africa)
Publication Date:
Sponsoring Org.:
SCOAP3, CERN, Geneva (Switzerland)
OSTI Identifier:
22572173
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2016; Journal Issue: 11; Other Information: PUBLISHER-ID: JCAP11(2016)001; OAI: oai:repo.scoap3.org:17878; cc-by Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CERN LHC; JET MODEL; MAJORANA FERMIONS; NONLUMINOUS MATTER; PARTICLE INTERACTIONS; REST MASS; SCALARS; STANDARD MODEL; STRING THEORY; T CHANNEL; VECTORS

Citation Formats

Goyal, Ashok, and Kumar, Mukesh. Fermionic dark matter in a simple t-channel model. United States: N. p., 2016. Web. doi:10.1088/1475-7516/2016/11/001.
Goyal, Ashok, & Kumar, Mukesh. Fermionic dark matter in a simple t-channel model. United States. doi:10.1088/1475-7516/2016/11/001.
Goyal, Ashok, and Kumar, Mukesh. Wed . "Fermionic dark matter in a simple t-channel model". United States. doi:10.1088/1475-7516/2016/11/001.
@article{osti_22572173,
title = {Fermionic dark matter in a simple t-channel model},
author = {Goyal, Ashok and Kumar, Mukesh},
abstractNote = {We consider a fermionic dark matter (DM) particle in renormalizable Standard Model (SM) gauge interactions in a simple t-channel model. The DM particle interactions with SM fermions is through the exchange of scalar and vector mediators which carry colour or lepton number. In the case of coloured mediators considered in this study, we find that if the DM is thermally produced and accounts for the observed relic density almost the entire parameter space is ruled out by the direct detection observations. The bounds from the monojet plus missing energy searches at the Large Hadron Collider are less stringent in this case. In contrast for the case of Majorana DM, we obtain strong bounds from the monojet searches which rule out DM particles of mass less than about a few hundred GeV for both the scalar and vector mediators.},
doi = {10.1088/1475-7516/2016/11/001},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 11,
volume = 2016,
place = {United States},
year = {Wed Nov 02 00:00:00 EDT 2016},
month = {Wed Nov 02 00:00:00 EDT 2016}
}