Search for non-resonant production of semi-visible jets using Run 2 data in ATLAS

Abstract

Semi-visible jets, with a significant contribution to the event's missing transverse momentum, can arise in strongly interacting dark sectors. This results in an event topology where one of the jets can be aligned with the direction of the missing transverse momentum. The first search for semi-visible jets produced via a $t$-channel mediator exchange is presented. The analysis uses proton-proton collisions with an integrated luminosity of 139 fb${}^{-1}$ and a centre-of-mass energy of 13 TeV, collected with the ATLAS detector during the Run 2 of the LHC. No excess over Standard Model predictions is observed. Assuming a coupling strength of unity between the mediator, a Standard Model quark and a dark quark, mediator masses up to 2.7 TeV are excluded at the 95% confidence level. Upper limits on the coupling strength are also derived.

35 pages in total, author list starting page 18, 6 figures, 2 tables. Published as Phys. Lett. B 848 (2024) 138324. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2022-37/

References in corpus (4)

• An Introduction to PYTHIA 8.2
• Herwig++ Physics and Manual
• Echoes of a Hidden Valley at Hadron Colliders
• Discovering the Higgs Through Highly-Displaced Vertices

Cited by in corpus (10)

• Exploration at the high-energy frontier: ATLAS Run~2 searches investigating the exotic jungle beyond the Standard Model
• Dark matter relic density in strongly interacting dark sectors with light vector mesons
• Glueball dark matter, precisely
• Search for new physics in final states with semi-visible jets or anomalous signatures using the ATLAS detector
• Uncovering tau leptons-enriched semi-visible jets at the LHC
• Search for emerging jets in $pp$ collisions at $\sqrt{s}=13.6$ TeV with the ATLAS experiment
• Review of Neutral Naturalness
• 2B or not 2B, a study of bottom-quark-philic semi-visible jets
• Search for emerging jets in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS experiment
• Overview of the ESCAPE Dark Matter Test Science Project for Astronomers