| Title: |
Measurement of single top-quark production in association with a W boson in the single-lepton channel at $$\sqrt{s} = 8\,\text {TeV}$$ with the ATLAS detector |
| Authors: |
Aad, G; Abbott, B; Abbott, DC; Abud, AA; Abeling, K; Abhayasinghe, DK; Abidi, SH; AbouZeid, OS; Abraham, NL; Abramowicz, H; Abreu, H; Abulaiti, Y; Acharya, BS; Achkar, B; Adachi, S; Adam, L; Bourdarios, CA; Adamczyk, L; Adamek, L; Adelman, J; Adersberger, M; Adiguzel, A; Adorni, S; Adye, T; Affolder, AA; Balunas, WK; Bortoletto, D; Coniavitis, E; Cooper-Sarkar, AM; Ferrando, J; Frost, JA; Gallas, EJ; Gwenlan, C; Hays, CP; Iizawa, T; Merlassino, C; Mermod, P; Moser, B; Nagai, K; Nickerson, RB; Potamianos, K; Rossi, E; Schopf, E; Shipsey, IPJ; Tseng, JC-L; Viehhauser, GHA; Weidberg, AR |
| Publisher Information: |
SpringerOpen |
| Publication Year: |
2026 |
| Collection: |
Oxford University Research Archive (ORA) |
| Description: |
The production cross-section of a top quark in association with a W boson is measured using proton–proton collisions at $$\sqrt{s} = 8\,\text {TeV}$$ s=8TeV . The dataset corresponds to an integrated luminosity of $$20.2\,\text {fb}^{-1}$$ 20.2fb-1 , and was collected in 2012 by the ATLAS detector at the Large Hadron Collider at CERN. The analysis is performed in the single-lepton channel. Events are selected by requiring one isolated lepton (electron or muon) and at least three jets. A neural network is trained to separate the tW signal from the dominant $$t{\bar{t}}$$ tt¯ background. The cross-section is extracted from a binned profile maximum-likelihood fit to a two-dimensional discriminant built from the neural-network output and the invariant mass of the hadronically decaying W boson. The measured cross-section is $$\sigma _{tW} = 26 \pm 7\,\text {pb}$$ σtW=26±7pb , in good agreement with the Standard Model expectation. |
| Document Type: |
article in journal/newspaper |
| Language: |
Latvian |
| DOI: |
10.1140/epjc/s10052-021-09371-7 |
| Availability: |
https://doi.org/10.1140/epjc/s10052-021-09371-7; https://ora.ox.ac.uk/objects/uuid:7b7186c4-7645-4815-9901-e399770fd8ce |
| Rights: |
info:eu-repo/semantics/openAccess ; CC Attribution (CC BY) |
| Accession Number: |
edsbas.ECF3975E |
| Database: |
BASE |