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

The ATLAS collaboration

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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.].

Original languageEnglish
Article number63
JournalJournal of High Energy Physics
Volume2018
Issue number1
DOIs
StatePublished - 1 Jan 2018

Funding

FundersFunder number
Not addedST/J005533/1, ST/K001426/1, ST/M000753/1, ST/N000307/1, ST/M00256X/1, ST/L003449/1, ST/H001158/2, ST/K000837/1, ST/L001217/1, ST/L001020/1, ST/L006162/1, ST/M006425/1, ST/N000447/1, ST/J004804/1, ST/H001158/1, ST/P00234X/1, ST/K001329/1, ST/N000420/1
AvH Foundation
Benoziyo Center, Israel
CEA-DSM/IRFU
Canada Council
Cantons of Bern and Geneva
DNSRCIN2P3-CNRS
DST/NRF
EU-ESF
In-vestissements d’Avenir Labex
MES of Russia
MESTD
MNE/IFA
MSMT
MSSR
Marie Sklo dowska-Curie Actions
Minerva, Israel
RGC
Région Auvergne
VSC CR
National Science Foundation
U.S. Department of Energy
Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS)
Ontario Innovation Trust
Canarie
Biomedical Research Foundation
Arizona-Nevada Academy of Science
CERN
Compute Canada
National Research Council
College of Arts and Sciences, University of Nebraska-Lincoln
Glycemic Index Foundation
Natural Sciences and Engineering Research Council of Canada
Science and Technology Facilities CouncilST/N000404/1, ST/J005509/1, GRIDPP
Science and Technology Facilities Council
Leverhulme Trust
Royal Society
British Skin Foundation
European Commission
European Research Council
Australian Research Council
Capital Markets CRC Limited
Singapore Eye Research Institute
Helmholtz-Gemeinschaft
Deutsche Forschungsgemeinschaft
Agence Nationale de la Recherche
Japan Society for the Promotion of Science
Ministry of Education, Culture, Sports, Science and Technology
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Danmarks Grundforskningsfond
Canada Foundation for Innovation
Fundação de Amparo à Pesquisa do Estado de São Paulo
National Natural Science Foundation of China
Fundação para a Ciência e a Tecnologia
Bundesministerium für Bildung und Forschung
Austrian Science Fund
Generalitat de Catalunya
Comisión Nacional de Investigación Científica y Tecnológica
Agencia Nacional de Promoción Científica y Tecnológica
Fonds Québécois de la Recherche sur la Nature et les Technologies
Ministerstvo Zdravotnictví Ceské Republiky
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Ministerio de Economía y Competitividad
Generalitat Valenciana
Bundesministerium für Wissenschaft, Forschung und Wirtschaft
General Secretariat for Research and Technology
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Ministry of Science and Technology
Joint Institute for Nuclear Research
Israel Science Foundation
Instituto Nazionale di Fisica Nucleare
Narodowe Centrum Nauki
Javna Agencija za Raziskovalno Dejavnost RS
Ministerstwo Nauki i Szkolnictwa Wyższego
Ministry of Science and Technology, Taiwan
Shota Rustaveli National Science Foundation
Israeli Centers for Research Excellence
Centre National pour la Recherche Scientifique et Technique
Horizon 2020
British Columbia Knowledge Development Fund
European Regional Development Fund
Marianne and Marcus Wallenberg Foundation
Fondation Partager le Savoir
National Research Center "Kurchatov Institute"
Ministry of Health of the Russian Federation

    Keywords

    • Hadron-Hadron scattering (experiments)

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