Journal of High Energy Physics

, 2018:126 | Cite as

Anomaly-free dark matter with harmless direct detection constraints

  • S. Caron
  • J. A. Casas
  • J. QuilisEmail author
  • R. Ruiz de Austri
Open Access
Regular Article - Theoretical Physics


Dark matter (DM) interacting with the SM fields via a Z′-boson (‘Z′-portal’) remains one of the most attractive WIMP scenarios, both from the theoretical and the phenomenological points of view. In order to avoid the strong constraints from direct detection and dilepton production, it is highly convenient that the Z′ has axial coupling to DM and leptophobic couplings to the SM particles, respectively. The latter implies that the associated U(1) coincides with baryon number in the SM sector. In this paper we completely classify the possible anomaly-free leptophobic Z′ with minimal dark sector, including the cases where the coupling to DM is axial. The resulting scenario is very predictive and perfectly viable from the present constraints from DM detection, EW observables and LHC data (di-lepton, di-jet and mono-jet production). We analyze all these constraints, obtaining the allowed areas in the parameter space, which generically prefer \( {m}_{Z^{\prime }} \) ≲ 500 GeV, apart from resonant regions. The best chances to test these viable areas come from future LHC measurements.


Beyond Standard Model Cosmology of Theories beyond the SM 


Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.


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Copyright information

© The Author(s) 2018

Authors and Affiliations

  • S. Caron
    • 1
    • 2
  • J. A. Casas
    • 3
  • J. Quilis
    • 3
    Email author
  • R. Ruiz de Austri
    • 4
  1. 1.Institute for Mathematics, Astrophysics and Particle Physics, Faculty of ScienceRadboud University NijmegenNijmegenThe Netherlands
  2. 2.NikhefAmsterdamThe Netherlands
  3. 3.Instituto de Física Teórica, IFT-UAM/CSICUniversidad Autónoma de MadridMadridSpain
  4. 4.Instituto de Física Corpuscular, IFIC-UV/CSICValenciaSpain

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