Caterina Doglioni
Affiliated
Observation of Single-Top-Quark Production in Association with a Photon Using the ATLAS Detector
Author
Summary, in English
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±23(stat) _{-71}^{+75}(syst) fb, to be compared with the standard model prediction of 515_{-42}^{+36} fb at next-to-leading order in QCD.
Department/s
- Particle and nuclear physics
- eSSENCE: The e-Science Collaboration
- Department of Physics
Publishing year
2023
Language
English
Publication/Series
Physical Review Letters
Volume
131
Issue
18
Document type
Journal article
Publisher
American Physical Society
Topic
- Subatomic Physics
Keywords
- article
- human
- photon
- quark
Status
Published
ISBN/ISSN/Other
- ISSN: 1079-7114