Publication Date
2023
Journal or Book Title
Physical Review
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±23(stat) +75−71(syst) fb, to be compared with the standard model prediction of 515+36−42 fb at next-to-leading order in QCD.
DOI
https://doi.org/10.1103/PhysRevLett.131.181901
Volume
131
Issue
18
License
UMass Amherst Open Access Policy
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Brau, Benjamin; Coelho Lopes de Sa, Rafael; Dallapiccola, Carlo; and et. al., "Observation of Single-Top-Quark Production in Association with a Photon Using the ATLAS Detector" (2023). Physical Review. 1301.
https://doi.org/10.1103/PhysRevLett.131.181901