Search for monotop events using the ATLAS detector at the LHC

TL;DR

This paper reports a search for monotop events with the ATLAS detector at the LHC, setting upper limits on production cross-sections for exotic invisible states associated with top quarks, with no deviations from the Standard Model observed.

Contribution

First search for monotop events at 8 TeV with ATLAS, establishing upper limits on exotic top-associated invisible particle production.

Findings

No deviation from Standard Model observed.

Upper limits set on production cross-sections.

Constraints on models with invisible exotic states.

Abstract

A search for the production of single-top-quarks in association with missing energy performed in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}=8$ TeV with the ATLAS experiment is presented. No deviation from the Standard Model prediction is observed, and upper limits are set on the production cross-section for resonant and non-resonant production of an invisible exotic state in association with a right-handed top quark.