Butterworth, Jonathan;
ATLAS Collaboration;
(2023)
Observation of Single-Top-Quark Production in Association with a Photon Using the ATLAS Detector.
Physical Review Letters
, 131
, Article 181901. 10.1103/PhysRevLett.131.181901.
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Abstract
This Letter reports the observation of single top quarks produced together with a photon, which directly probes the electroweak coupling of the top quark. The analysis uses 139 fb−1 of 13 TeV proton-proton collision data collected with the ATLAS detector at the Large Hadron Collider. Requiring a photon with transverse momentum larger than 20 GeV and within the detector acceptance, the fiducial cross section is measured to be 688 � 23ðstatÞ þ75 −71 ðsystÞ fb, to be compared with the standard model prediction of 515þ36 −42 fb at next-to-leading order in QCD.
| Type: | Article |
|---|---|
| Title: | Observation of Single-Top-Quark Production in Association with a Photon Using the ATLAS Detector |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.131.181901 |
| Publisher version: | https://doi.org/10.1103/PhysRevLett.131.181901 |
| Language: | English |
| Additional information: | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10180300 |
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