Year: 2023
Type: article
Abstract: 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 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.
Source: The European Physical Journal C
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
Awards: G1541806023, G1771230537, TRR 257: Phänomenologische Elementarteilchenphysik nach der HiggsEntdeckung, G2778679777, G3531124447, G3561040202, Converging on new particles and fundamental symmetries, G5528654823, G5768834005, G5997058474, G6537386148, G6873874887, G6926846737, G6955735330, G7108246583, G7447190122, G7573294876, G7629755209, G764792286, G8150249736, G8695159654, ARC Centre of Excellence for Dark Matter Particle Physics, G8986044568
OpenAlex ID: W4385584155