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Observation of Single-Top-Quark Production in Association with a Photon Using the ATLAS Detector

Aad G.
•
Abbott B.
•
Abbott D. C.
altro
Zwalinski L.
2023
  • journal article

Periodico
PHYSICAL REVIEW LETTERS
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) _{-71}^{+75}(syst) fb, to be compared with the standard model prediction of 515_{-42}^{+36} fb at next-to-leading order in QCD.
DOI
10.1103/PhysRevLett.131.181901
WOS
WOS:001094321900001
Archivio
https://hdl.handle.net/11390/1268136
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85179841715
https://ricerca.unityfvg.it/handle/11390/1268136
Diritti
open access
google-scholar
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