https://doi.org/10.1140/epjc/s10052-017-4871-0
Regular Article - Theoretical Physics
Simplified dark matter models with a spin-2 mediator at the LHC
1
Laboratoire de Physique Subatomique et de Cosmologie, Université Grenoble-Alpes, CNRS/IN2P3, 53 Avenue des Martyrs, 38026, Grenoble, France
2
LAPTh, Université Savoie Mont Blanc, CNRS, B.P.110, Annecy-le-Vieux, 74941, Annecy Cedex, France
3
Theoretische Natuurkunde and IIHE/ELEM, Vrije Universiteit Brussel, and International Solvay Institutes, Pleinlaan 2, 1050, Brussels, Belgium
4
Department of Physics, Graduate School of Humanities and Sciences, and Program for Leading Graduate Schools, Ochanomizu University, Tokyo, 112-8610, Japan
* e-mail: kentarou.mawatari@lpsc.in2p3.fr
Received:
3
February
2017
Accepted:
26
April
2017
Published online:
18
May
2017
We consider simplified dark matter models where a dark matter candidate couples to the standard model (SM) particles via an s-channel spin-2 mediator, and study constraints on the model parameter space from the current LHC data. Our focus lies on the complementarity among different searches, in particular monojet and multijet plus missing-energy searches and resonance searches. For universal couplings of the mediator to SM particles, missing-energy searches can give stronger constraints than WW, ZZ, dijet, dihiggs, 
, 
resonance searches in the low-mass region and/or when the coupling of the mediator to dark matter is much larger than its couplings to SM particles. The strongest constraints, however, come from diphoton and dilepton resonance searches. Only if these modes are suppressed, missing-energy searches can be competitive in constraining dark matter models with a spin-2 mediator.
© The Author(s), 2017
