Measurement of single top-quark production in association with a W boson in the single-lepton channel at √s=8TeV with the ATLAS detector
(2021) In European Physical Journal C 81(8).- Abstract
- The production cross-section of a top quark in association with a W boson is measured using proton–proton collisions at s√=8TeV. The dataset corresponds to an integrated luminosity of 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 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... (More)
- The production cross-section of a top quark in association with a W boson is measured using proton–proton collisions at s√=8TeV. The dataset corresponds to an integrated luminosity of 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 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 σtW=26±7pb, in good agreement with the Standard Model expectation. (Less)
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- publishing date
- 2021
- type
- Contribution to journal
- publication status
- published
- subject
- in
- European Physical Journal C
- volume
- 81
- issue
- 8
- article number
- 720
- publisher
- Springer
- external identifiers
-
- scopus:85112563688
- ISSN
- 1434-6044
- DOI
- 10.1140/epjc/s10052-021-09371-7
- language
- English
- LU publication?
- yes
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- 4c66ed33-0c6c-4418-bdd9-07ebd5cb2277
- date added to LUP
- 2021-09-23 10:30:12
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- 2023-04-02 17:42:09
@article{4c66ed33-0c6c-4418-bdd9-07ebd5cb2277, abstract = {{The production cross-section of a top quark in association with a W boson is measured using proton–proton collisions at s√=8TeV. The dataset corresponds to an integrated luminosity of 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 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 σtW=26±7pb, in good agreement with the Standard Model expectation.}}, author = {{Aad, G and Åkesson, Torsten and Bocchetta, Simona and Bryngemark, Lene and Corrigan, Eric Edward and Doglioni, Caterina and Dolejsi, J and Gregersen, K. and Hansen, E. and Hedberg, Vincent and Hejbal, J and Jarlskog, Göran and Jejelava, J and Kalderon, Charles and Kellermann, Edgar and Konya, Balazs and Lytken, Else and Mankinen, Katja and Marcon, Caterina and Mjörnmark, Ulf and Mullier, Geoffrey André Adrien and Pöttgen, Ruth and Poulsen, Trine and Skorda, Eleni and Smirnova, Oxana and Zwalinski, L}}, issn = {{1434-6044}}, language = {{eng}}, number = {{8}}, publisher = {{Springer}}, series = {{European Physical Journal C}}, title = {{Measurement of single top-quark production in association with a W boson in the single-lepton channel at √s=8TeV with the ATLAS detector}}, url = {{http://dx.doi.org/10.1140/epjc/s10052-021-09371-7}}, doi = {{10.1140/epjc/s10052-021-09371-7}}, volume = {{81}}, year = {{2021}}, }