https://doi.org/10.1140/epjc/s10052-023-11859-3
Regular Article - Theoretical Physics
Global fits of simplified models for dark matter with GAMBIT
II. Vector dark matter with an s-channel vector mediator
1
School of Mathematics and Physics, The University of Queensland, St. Lucia, 4072, Brisbane, QLD, Australia
2
Quantum Brilliance Pty Ltd, The Australian National University, Daley Road, 2601, Acton, ACT, Australia
3
Institute for Theoretical Particle Physics (TTP), Karlsruhe Institute of Technology (KIT), 76128, Karlsruhe, Germany
4
ARC Centre of Excellence for Dark Matter Particle Physics and CSSM, Department of Physics, University of Adelaide, 5005, Adelaide, SA, Australia
a christopher.chang@uq.net.au, christopher.chang@uqconnect.edu.au
Received:
29
March
2023
Accepted:
25
July
2023
Published online:
4
August
2023
Global fits explore different parameter regions of a given model and apply constraints obtained at many energy scales. This makes it challenging to perform global fits of simplified models, which may not be valid at high energies. In this study, we derive a unitarity bound for a simplified vector dark matter model with an s-channel vector mediator and apply it to global fits of this model with GAMBIT in order to correctly interpret missing energy searches at the LHC. Two parameter space regions emerge as consistent with all experimental constraints, corresponding to different annihilation modes of the dark matter. We show that although these models are subject to strong validity constraints, they are currently most strongly constrained by measurements less sensitive to the high-energy behaviour of the theory. Understanding when these models cannot be consistently studied will become increasingly relevant as they are applied to LHC Run 3 data.
The original online version of this article was revised to add the missing data availability statement in the online version of the article.
An erratum to this article is available online at https://doi.org/10.1140/epjc/s10052-023-11924-x.
Copyright comment corrected publication 2023
© The Author(s) 2023. corrected publication 2023
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