Observation of Single-Top-Quark Production in Association with a Photon Using the ATLAS Detector
- Publication Type
- Original research
- Authors
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.
Journal
- Title
- PHYSICAL REVIEW LETTERS
- Publisher
- APS
- Publisher Country
- United States of America
- Publication Type
- Prtinted only
- Volume
- --
- Year
- --
- Pages
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