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Measurement of the cross-section for producing a W boson in association with a single top quark in pp collisions at √s=13 TeV with ATLAS

Aaboud, M ; Aad, G ; Abbott, B. ; Abdallah, J ; Abdinov, O ; Abeloos, B ; Åkesson, Torsten LU ; Bocchetta, Simona LU ; Bryngemark, Lene LU and Doglioni, Caterina LU , et al. (2018) In Journal of High Energy Physics 2018(1).
Abstract
The inclusive cross-section for the associated production of a W boson and top quark is measured using data from proton-proton collisions at s=13 TeV. The dataset corresponds to an integrated luminosity of 3.2 fb−1, and was collected in 2015 by the ATLAS detector at the Large Hadron Collider at CERN. Events are selected requiring two opposite sign isolated leptons and at least one jet; they are separated into signal and control regions based on their jet multiplicity and the number of jets that are identified as containing b hadrons. The W t signal is then separated from the tt¯ background using boosted decision tree discriminants in two regions. The cross-section is extracted by fitting templates to the data distributions, and is measured... (More)
The inclusive cross-section for the associated production of a W boson and top quark is measured using data from proton-proton collisions at s=13 TeV. The dataset corresponds to an integrated luminosity of 3.2 fb−1, and was collected in 2015 by the ATLAS detector at the Large Hadron Collider at CERN. Events are selected requiring two opposite sign isolated leptons and at least one jet; they are separated into signal and control regions based on their jet multiplicity and the number of jets that are identified as containing b hadrons. The W t signal is then separated from the tt¯ background using boosted decision tree discriminants in two regions. The cross-section is extracted by fitting templates to the data distributions, and is measured to be σW t = 94 ± 10(stat.)− 22 + 28(syst.) ± 2(lumi.) pb. The measured value is in good agreement with the SM prediction of σtheory = 71.7±1.8 (scale)± 3.4 (PDF) pb [1].[Figure not available: see fulltext.]. © 2018, The Author(s). (Less)
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keywords
Hadron-Hadron scattering (experiments)
in
Journal of High Energy Physics
volume
2018
issue
1
article number
63
publisher
Springer
external identifiers
  • scopus:85040833876
ISSN
1029-8479
DOI
10.1007/JHEP01(2018)063
language
English
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yes
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Export Date: 30 January 2018
id
130f3e67-5672-47b2-ab4e-0eafeb748d2a
date added to LUP
2018-01-30 15:53:29
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2020-07-08 04:09:42
@article{130f3e67-5672-47b2-ab4e-0eafeb748d2a,
  abstract     = {The inclusive cross-section for the associated production of a W boson and top quark is measured using data from proton-proton collisions at s=13 TeV. The dataset corresponds to an integrated luminosity of 3.2 fb−1, and was collected in 2015 by the ATLAS detector at the Large Hadron Collider at CERN. Events are selected requiring two opposite sign isolated leptons and at least one jet; they are separated into signal and control regions based on their jet multiplicity and the number of jets that are identified as containing b hadrons. The W t signal is then separated from the tt¯ background using boosted decision tree discriminants in two regions. The cross-section is extracted by fitting templates to the data distributions, and is measured to be σW t = 94 ± 10(stat.)− 22 + 28(syst.) ± 2(lumi.) pb. The measured value is in good agreement with the SM prediction of σtheory = 71.7±1.8 (scale)± 3.4 (PDF) pb [1].[Figure not available: see fulltext.]. © 2018, The Author(s).},
  author       = {Aaboud, M and Aad, G and Abbott, B. and Abdallah, J and Abdinov, O and Abeloos, B and Åkesson, Torsten and Bocchetta, Simona and Bryngemark, Lene and Doglioni, Caterina and Hedberg, Vincent and Jarlskog, Göran and Lytken, Else and Mjörnmark, Ulf and Smirnova, Oxana and Viazlo, Oleksandr},
  issn         = {1029-8479},
  language     = {eng},
  number       = {1},
  publisher    = {Springer},
  series       = {Journal of High Energy Physics},
  title        = {Measurement of the cross-section for producing a W boson in association with a single top quark in pp collisions at √s=13 TeV with ATLAS},
  url          = {http://dx.doi.org/10.1007/JHEP01(2018)063},
  doi          = {10.1007/JHEP01(2018)063},
  volume       = {2018},
  year         = {2018},
}