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

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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

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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
Author(s):
Aaboud, M.;
Aad, G.;
Abbott, B.;
Abdallah, J.;
Abdinov, O.;
Abeloos, B.;
Aben, R.;
Izen, Joseph M.;
Kurth, Matthew G.;
Leyton, Michael;
Meirose, Bernhard;
Reeves, Kendall;
ATLAS Collaboration
Date Created: 2018-01-15
Item Type: article
Keywords: Show Keywords
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 tt̅ 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 σ_{Wt} = 94 ± 10(stat.)_{− 22} ^{+ 28} (syst.) ± 2(lumi.) pb. The measured value is in good agreement with the SM prediction of σ_{theory} = 71.7±1.8 (scale)± 3.4 (PDF) pb [1].
Publisher: Springer Verlag
ISSN: 1126-6708
Source: Journal of High Energy Physics
Link to Related Resource: http://dx.doi.org/10.1007/JHEP01(2018)063
Persistent Link: http://hdl.handle.net/10735.1/6261
Bibliographic Citation: Aaboud, M., G. Aad, B. Abbott, et al. 2018. "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." Journal of High Energy Physics 2018(1).
Terms of Use: CC BY 4.0 (Attribution)
©2018 CERN, for the ATLAS Collaboration

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