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Constraining dark sectors with monojets and dijets
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  • Regular Article - Theoretical Physics
  • Open Access
  • Published: 17 July 2015

Constraining dark sectors with monojets and dijets

  • Mikael Chala1,
  • Felix Kahlhoefer1,
  • Matthew McCullough2,
  • Germano Nardini1 &
  • …
  • Kai Schmidt-Hoberg1 

Journal of High Energy Physics volume 2015, Article number: 89 (2015) Cite this article

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A preprint version of the article is available at arXiv.

Abstract

We consider dark sector particles (DSPs) that obtain sizeable interactions with Standard Model fermions from a new mediator. While these particles can avoid observation in direct detection experiments, they are strongly constrained by LHC measurements. We demonstrate that there is an important complementarity between searches for DSP production and searches for the mediator itself, in particular bounds on (broad) dijet resonances. This observation is crucial not only in the case where the DSP is all of the dark matter but whenever — precisely due to its sizeable interactions with the visible sector — the DSP annihilates away so efficiently that it only forms a dark matter subcomponent. To highlight the different roles of DSP direct detection and LHC monojet and dijet searches, as well as perturbativity constraints, we first analyse the exemplary case of an axial-vector mediator and then generalise our results. We find important implications for the interpretation of LHC dark matter searches in terms of simplified models.

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  1. DESY, Notkestrasse 85, D-22607, Hamburg, Germany

    Mikael Chala, Felix Kahlhoefer, Germano Nardini & Kai Schmidt-Hoberg

  2. Theory Division, CERN, 1211, Geneva 23, Switzerland

    Matthew McCullough

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  1. Mikael Chala
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Chala, M., Kahlhoefer, F., McCullough, M. et al. Constraining dark sectors with monojets and dijets. J. High Energ. Phys. 2015, 89 (2015). https://doi.org/10.1007/JHEP07(2015)089

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  • Received: 30 March 2015

  • Revised: 12 June 2015

  • Accepted: 22 June 2015

  • Published: 17 July 2015

  • DOI: https://doi.org/10.1007/JHEP07(2015)089

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  • Beyond Standard Model
  • Cosmology of Theories beyond the SM
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