Observation of single-top-quark production in association with a photon using the ATLAS detector

Aad, G.; Abbott, B.; Abbott, D.C.; Chudoba, Jiří; Hejbal, Jiří; Jačka, Petr; Kepka, Oldřich; Kroll, Jiří; Kupčo, Alexander; Latoňová, Věra; Lokajíček, Miloš; Lysák, Roman; Marčišovský, Michal; Mikeštíková, Marcela; Němeček, Stanislav; Penc, Ondřej; Šícho, Petr; Staroba, Pavel; Svatoš, Michal; Taševský, Marek

doi:https://dx.doi.org/10.1103/PhysRevLett.131.181901

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Observation of single-top-quark production in association with a photon using the ATLAS detector

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SYSNO ASEP	0579126
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Observation of single-top-quark production in association with a photon using the ATLAS detector
Author(s)	Aad, G. (FR) Abbott, B. (US) Abbott, D.C. (US) Chudoba, Jiří (FZU-D)_{RID, ORCID} Hejbal, Jiří (FZU-D)_{RID, ORCID} Jačka, Petr (FZU-D)_ORCID Kepka, Oldřich (FZU-D)_{RID, ORCID} Kroll, Jiří (FZU-D)_ORCID Kupčo, Alexander (FZU-D)_{RID, ORCID} Latoňová, Věra (FZU-D)_ORCID Lokajíček, Miloš (FZU-D)_{RID, ORCID} Lysák, Roman (FZU-D)_{RID, ORCID} Marčišovský, Michal (FZU-D)_{RID, ORCID} Mikeštíková, Marcela (FZU-D)_{RID, ORCID} Němeček, Stanislav (FZU-D)_{RID, ORCID} Penc, Ondřej (FZU-D)_ORCID Šícho, Petr (FZU-D)_{RID, ORCID} Staroba, Pavel (FZU-D)_{RID, ORCID} Svatoš, Michal (FZU-D)_{RID, ORCID} Taševský, Marek (FZU-D)_{RID, ORCID}
Number of authors	2899
Article number	181901
Source Title	Physical Review Letters. - : American Physical Society - ISSN 0031-9007 Roč. 131, č. 18 (2023)
Number of pages	22 s.
Language	eng - English
Country	US - United States
Keywords	ATLAS ; quantum chromodynamics: perturbation theory ; acceptance ; photon: transverse momentum
Subject RIV	BF - Elementary Particles and High Energy Physics
OECD category	Particles and field physics
Research Infrastructure	CERN-CZ III - 90240 - Fyzikální ústav AV ČR, v. v. i.
Method of publishing	Open access
Institutional support	FZU-D - RVO:68378271
UT WOS	001094321900001
EID SCOPUS	85177444137
DOI	10.1103/PhysRevLett.131.181901
Annotation	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.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2024
Electronic address	https://hdl.handle.net/11104/0347995

Number of the records: 1