Observation of Single-Top-Quark Production in Association with a Photon Using the ATLAS Detector.
Journal
Physical review letters
ISSN: 1079-7114
Titre abrégé: Phys Rev Lett
Pays: United States
ID NLM: 0401141
Informations de publication
Date de publication:
03 Nov 2023
03 Nov 2023
Historique:
received:
06
02
2023
revised:
03
08
2023
accepted:
09
08
2023
medline:
18
11
2023
pubmed:
18
11
2023
entrez:
17
11
2023
Statut:
ppublish
Résumé
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.
Identifiants
pubmed: 37977601
doi: 10.1103/PhysRevLett.131.181901
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM