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

ATLAS Publications; T.M. Carter; R.Y. Gonzalez Andana; A. Hasib; M.P. Heath; S. Palazzo; V.A. Parrish; E.P. Takeva; N. Themistokleous; E.M. Villhauer; E. Zaid

doi:10.1103/PhysRevLett.131.181901

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

ATLAS Publications, T.M. Carter, R.Y. Gonzalez Andana, A. Hasib, M.P. Heath, S. Palazzo, V.A. Parrish, E.P. Takeva, N. Themistokleous, E.M. Villhauer, E. Zaid

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-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.

Original language	English
Article number	181901
Pages (from-to)	1-22
Number of pages	22
Journal	Physical Review Letters
Volume	131
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.131.181901
Publication status	Published - 30 Oct 2023

Keywords / Materials (for Non-textual outputs)

Pair Production
Plus Plus

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10.1103/PhysRevLett.131.181901Licence: Creative Commons: Attribution (CC-BY)

http://arxiv.org/abs/2302.01283

1 Active
5 Finished

Upgrade of the ATLAS detector at the LHC (2023-26)
Clark, P. (Principal Investigator)
1/04/23 → 31/03/26
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
1/04/23 → 30/09/25
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
1/10/22 → 30/09/25
Project: Research

Cite this

ATLAS Publications, Carter, T. M., Gonzalez Andana, R. Y., Hasib, A., Heath, M. P., Palazzo, S., Parrish, V. A., Takeva, E. P., Themistokleous, N., Villhauer, E. M., & Zaid, E. (2023). Observation of Single-Top-Quark Production in Association with a Photon Using the ATLAS Detector. Physical Review Letters, 131(18), 1-22. Article 181901. https://doi.org/10.1103/PhysRevLett.131.181901

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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.",

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doi = "10.1103/PhysRevLett.131.181901",

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AU - ATLAS Publications

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AU - Leonidopoulos, Christos

AU - Martin, Victoria Jane

AU - Mijovic, Liza

AU - Wynne, Benjamin

AU - Alderweireldt, Sara

AU - Carter, T.M.

AU - Gonzalez Andana, R.Y.

AU - Hasib, A.

AU - Heath, M.P.

AU - Palazzo, S.

AU - Parrish, V.A.

AU - Takeva, E.P.

AU - Themistokleous, N.

AU - Villhauer, E.M.

AU - Zaid, E.

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DO - 10.1103/PhysRevLett.131.181901

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

Abstract

Keywords / Materials (for Non-textual outputs)

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Projects

Upgrade of the ATLAS detector at the LHC (2023-26)

Experimental Particle Physics at the University of Edinburgh

Experimental Particle Physics at the University of Edinburgh

Cite this