Constraints on simplified dark matter models involving an s-channel mediator with the ATLAS detector in pp collisions at s=13 TeV

Summary, in English

This paper reports a summary of searches for a fermionic dark matter candidate in the context of theoretical models characterised by a mediator particle exchange in the s-channel. The data sample considered consists of pp collisions delivered by the Large Hadron Collider during its Run 2 at a centre-of-mass energy of s=13TeV and recorded by the ATLAS detector, corresponding to up to 140 fb-1. The interpretations of the results are based on simplified models where the new mediator particles can be spin-0, with scalar or pseudo-scalar couplings to fermions, or spin-1, with vector or axial-vector couplings to fermions. Exclusion limits are obtained from various searches characterised by final states with resonant production of Standard Model particles, or production of Standard Model particles in association with large missing transverse momentum. © The Author(s) 2024.

• Author: G. Aad; T.P.A. Åkesson; K.S.V. Astrand; C. Doglioni; P.A. Ekman; V. Hedberg; H. Herde; B. Konya; E. Lytken; R. Poettgen; N.D. Simpson; O. Smirnova; E.J. Wallin; L. Zwalinski
• Department/s: Particle and nuclear physics; eSSENCE: The e-Science Collaboration; Department of Physics
• Publishing year: 2024
• Language: English
• Publication/Series: European Physical Journal C
• Volume: 84
• Issue: 10
• Links: http://dx.doi.org/10.1140/epjc/s10052-024-13215-5
• Document type: Journal article
• Publisher: Springer Nature
• Topic: Subatomic Physics
• Keywords: Colliding beam accelerators; Dark Matter; Electrons; Hadrons; Linear accelerators; Negative ions; Photons; Positive ions; A-center; ATLAS detectors; Center-of-mass energies; Dark matter; Data sample; Large Hadron Collider; Large-hadron colliders; Particle exchange; Standard model; Theoretical modeling; Fermions
• Status: Published
• ISBN/ISSN/Other: ISSN: 1434-6044