Impact of ATLAS constraints on effective dark matter-standard model interactions with spin-one mediators

TL;DR

This study extends previous EFT analyses of dark matter interactions with standard model particles via spin-one mediators, incorporating ATLAS collider constraints to refine viable dark matter mass ranges and operator solutions.

Contribution

It introduces collider constraints from ATLAS into the EFT framework, expanding the analysis to higher dark matter masses and providing updated viable parameter spaces for different operators.

Findings

ATLAS monojet data imposes strong constraints for light dark matter masses.

Operators of dimension 5 have viable solutions above 30-43 GeV.

Operator of dimension 6 is viable for masses above approximately 190 GeV.

Abstract

We complement a previous work \cite{Fortuna:2020wwx} using an EFT framework of dark matter and standard model interactions, with spin-one mediators, exploring a wider dark matter mass range, up to $6.4$ TeV. We use again bounds from different experiments: relic density, direct detection experiments and indirect detection limits from the search of gamma-ray emissions and positron fluxes. Besides, in this paper we add collider constraints by the ATLAS Collaboration in monojet analysis. Moreover, here we tested our previous results in the light of the aforementioned ATLAS data, which turn out to be the most restrictive forlight dark matter masses (as expected), $m_{\rm DM}<M_Z/2$. We obtain a larger range of solutions for the operators of dimension 5, OP1 and OP4, where masses above $43$ GeV and $30$ GeV (but for the $Z$ resonance region, $\sim (M_Z\pm\Gamma_Z)/2$), respectively, are allowed. In contrast, the operator of dimension 6, OP3, has viable solutions for masses $\gtrsim 190$ GeV. For the combination of OP1\&OP3 we obtain solutions (for masses larger than $140$ or $325$ GeV) that depend on the relative sign between the operators.