Measurement of the tt¯Z and tt¯W cross sections in proton-proton collisions at s=13  TeV with the ATLAS detector

(ATLAS Collaboration)

doi:10.1103/PhysRevD.99.072009

Measurement of the tt¯Z and tt¯W cross sections in proton-proton collisions at s=13 TeV with the ATLAS detector

(ATLAS Collaboration)

Mohamed I University
Aix-Marseille Université
University of Oklahoma
University of Massachusetts
Azerbaijan National Academy of Sciences
Université Paris-Saclay
Royal Holloway University of London
University of Toronto
University of Copenhagen
University of Sussex
Tel Aviv University
Technion-Israel Institute of Technology
Argonne National Laboratory
National Institute for Nuclear Physics
Abdus Salam International Centre for Theoretical Physics
The University of Tokyo
Johannes Gutenberg University Mainz
AGH University of Science and Technology
Northern Illinois University
Ludwig Maximilian University of Munich
Bogazici University
Rutherford Appleton Laboratory
University of California at Santa Cruz
Alexandru Ioan Cuza University of Iaşi
Laboratório de Instrumentação e Física Experimental de Partículas
University of Granada
NOVA University Lisbon
Joint Institute for Nuclear Research
University of Rome Tor Vergata
Kyoto University
Lund University
University of Geneva
RAS - P.N. Lebedev Physics Institute
University of Bologna
University of Victoria BC
Consejo Nacional de Investigaciones Científicas y Técnicas
Radboud University Nijmegen
CERN
Horia Hulubei National Institute of Physics and Nuclear Engineering
Humboldt University of Berlin
National Technical University of Athens
Czech Technical University in Prague
The University of Chicago
University of Washington
University of Oregon
University of Birmingham
University of Naples Federico II
University of Glasgow
University of Valencia
Lawrence Berkeley National Laboratory
Universidade Federal do Rio de Janeiro
McGill University
University of Oxford
Brandeis University
University of Michigan, Ann Arbor
University of Coimbra
German Electron Synchrotron
Iowa State University
University of Sheffield
Université Paris-Saclay
University of Texas at Austin
Heidelberg University
University of Bern
University of Milan
Université Clermont Auvergne
University of Amsterdam
Columbia University
Novosibirsk State University
University of California at Irvine
High Energy Accelerator Research Organization, Tsukuba
Michigan State University
Duke University
University of Montreal
University of Iowa
Queen Mary University of London
University of Cambridge
University of Bonn
Alikhanov Institute for Theoretical and Experimental Physics
Harvard University
Uppsala University
Brookhaven National Laboratory
Comenius University
University of Cape Town
University of Illinois
University of Siegen
University of Science and Technology of China
CAS - Institute of High Energy Physics
York University
INFN
University of Salento
University of Rome La Sapienza
Cracow
Simon Fraser University
Yale University
University of Texas at Arlington
University of Sydney
Weizmann Institute of Science
University of Pennsylvania School of Arts and Sciences
University of Wisconsin-Madison
University of Wuppertal
University of Melbourne
University of Genoa
Max Planck Institute for Physics (Werner Heisenberg Institute)
SLAC National Accelerator Laboratory
Shanghai Jiao Tong University
Universidad Autónoma de Madrid
Lancaster University
Russian Research Centre Kurchatov Institute
Mohammed V University in Rabat
Ohio State University
Sorbonne Université
Tufts University
University of Göttingen
University of Freiburg
Gaziantep University
Bahcesehir University
Stony Brook University
University of Innsbruck
University College London
Carleton University
National and Kapodistrian University of Athens
Moscow Engineering Physics Institute
University of Hassan II Casablanca
National Center for Energy, Nuclear Science and Technology
Université Grenoble Alpes
University of Arizona
Stockholm University
Oskar Klein Centre
University of Manchester
University of Pittsburgh
University of Pisa
Technische Universität Dresden
Boston University
Pontificia Universidad Católica de Chile
Lomonosov Moscow State University
University of Liverpool
Institute for High Energy Physics
Institute for High Energy Physics
Universidad de Buenos Aires
University of Johannesburg
Tokyo Metropolitan University
Universidad Técnica Federico Santa Maria
Slovak Academy of Sciences
University of Bergen
University of Oslo
TU Dortmund University
Academia Sinica - Institute of Physics
SUNY Albany
Ankara University
Indiana University Bloomington
Oklahoma State University
University of Calabria
Charles University
University of Minho
Istanbul Bilgi University
Roma Tre University
Universidade Federal de Juiz de Fora
Tbilisi State University
TRIUMF
Nanjing University
Tsinghua University
Kobe University
Chinese University of Hong Kong
University of Chinese Academy of Sciences
National Tsing Hua University
Aristotle University of Thessaloniki
Czech Academy of Sciences
Palacký University Olomouc
University of Ljubljana
University of Edinburgh
University of Udine
University of British Columbia
New York University
Shandong University
University of Alberta
Universidade Federal de São João del-Rei
Universidade de São Paulo
Justus Liebig University Giessen
University of Adelaide
Cadi Ayyad University
University of Warwick
University of Pavia
Southern Methodist University
TIFPA
University of Trento
Nagasaki Institute of Applied Science
University of Lisbon
West University of Timisoara
Louisiana Tech University
University of New Mexico
University of Tsukuba
University of Würzburg
Belarus Academy of Sciences
Shinshu University
University of the Witwatersrand
Osaka University
Nagoya University
Belarusian State University
Tokyo Institute of Technology
University of Texas at Dallas
Ivane Javakhishvili Tbilisi State University
Waseda University
Kyushu University
Tomsk State University
University of Belgrade
Istanbul Aydin University
Hong Kong University of Science and Technology
The University of Hong Kong
Universidad Antonio Nariño
KTH Royal Institute of Technology
A. Alikhanian Yerevan Institute of Physics
Hiroshima Institute of Technology
Okayama University
Jagiellonian University in Kraków
National Institute for Research and Development of Isotopic and Molecular Technologies
University Politehnica of Bucharest
IN2P3 - Institut National de Physique Nucléaire et de Physique Des Particules
TOBB University of Economics and Technology
Kyoto University of Education
Transilvania University of Brasov

Research output: Contribution to journal › Article › peer-review

108 Citations (Scopus)

Abstract

A measurement of the associated production of a top-quark pair (tt) with a vector boson (W, Z) in proton-proton collisions at a center-of-mass energy of 13 TeV is presented, using 36.1 fb-1 of integrated luminosity collected by the ATLAS detector at the Large Hadron Collider. Events are selected in channels with two same- or opposite-sign leptons (electrons or muons), three leptons or four leptons, and each channel is further divided into multiple regions to maximize the sensitivity of the measurement. The ttZ and ttW production cross sections are simultaneously measured using a combined fit to all regions. The best-fit values of the production cross sections are σttZ=0.95±0.08stat±0.10syst pb and σttW=0.87±0.13stat±0.14syst pb in agreement with the Standard Model predictions. The measurement of the ttZ cross section is used to set constraints on effective field theory operators which modify the ttZ vertex.

Original language	English
Article number	072009
Journal	Physical Review D
Volume	99
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.99.072009
Publication status	Published - 29 Apr 2019

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevD.99.072009

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@article{4702ed9c52cf4a3c97bee77e95bce8df,

title = "Measurement of the tt¯Z and tt¯W cross sections in proton-proton collisions at s=13 TeV with the ATLAS detector",

abstract = "A measurement of the associated production of a top-quark pair (tt) with a vector boson (W, Z) in proton-proton collisions at a center-of-mass energy of 13 TeV is presented, using 36.1 fb-1 of integrated luminosity collected by the ATLAS detector at the Large Hadron Collider. Events are selected in channels with two same- or opposite-sign leptons (electrons or muons), three leptons or four leptons, and each channel is further divided into multiple regions to maximize the sensitivity of the measurement. The ttZ and ttW production cross sections are simultaneously measured using a combined fit to all regions. The best-fit values of the production cross sections are σttZ=0.95±0.08stat±0.10syst pb and σttW=0.87±0.13stat±0.14syst pb in agreement with the Standard Model predictions. The measurement of the ttZ cross section is used to set constraints on effective field theory operators which modify the ttZ vertex.",

author = "\{(ATLAS Collaboration)\} and M. Aaboud and G. Aad and B. Abbott and Abbott, \{D. C.\} and O. Abdinov and B. Abeloos and Abhayasinghe, \{D. K.\} and Abidi, \{S. H.\} and Abouzeid, \{O. S.\} and Abraham, \{N. L.\} and H. Abramowicz and H. Abreu and Y. Abulaiti and Acharya, \{B. S.\} and S. Adachi and L. Adam and L. Adamczyk and L. Adamek and J. Adelman and M. Adersberger and A. Adiguzel and T. Adye and Affolder, \{A. A.\} and Y. Afik and C. Agheorghiesei and Aguilar-Saavedra, \{J. A.\} and F. Ahmadov and G. Aielli and S. Akatsuka and {\AA}kesson, \{T. P.A.\} and E. Akilli and Akimov, \{A. V.\} and Alberghi, \{G. L.\} and J. Albert and P. Albicocco and \{Alconada Verzini\}, \{M. J.\} and S. Alderweireldt and M. Aleksa and Aleksandrov, \{I. N.\} and C. Alexa and D. Alexandre and T. Alexopoulos and M. Alhroob and B. Ali and G. Alimonti and J. Alison and Alkire, \{S. P.\} and Connell, \{S. H.\} and N. Govender and L. Truong",

note = "Publisher Copyright: {\textcopyright} 2019 CERN, for the ATLAS Collaboration.",

year = "2019",

month = apr,

day = "29",

doi = "10.1103/PhysRevD.99.072009",

language = "English",

volume = "99",

journal = "Physical Review D",

issn = "2470-0010",

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T1 - Measurement of the tt¯Z and tt¯W cross sections in proton-proton collisions at s=13 TeV with the ATLAS detector

AU - (ATLAS Collaboration)

AU - Aaboud, M.

AU - Aad, G.

AU - Abbott, B.

AU - Abbott, D. C.

AU - Abdinov, O.

AU - Abeloos, B.

AU - Abhayasinghe, D. K.

AU - Abidi, S. H.

AU - Abouzeid, O. S.

AU - Abraham, N. L.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Adachi, S.

AU - Adam, L.

AU - Adamczyk, L.

AU - Adamek, L.

AU - Adelman, J.

AU - Adersberger, M.

AU - Adiguzel, A.

AU - Adye, T.

AU - Affolder, A. A.

AU - Afik, Y.

AU - Agheorghiesei, C.

AU - Aguilar-Saavedra, J. A.

AU - Ahmadov, F.

AU - Aielli, G.

AU - Akatsuka, S.

AU - Åkesson, T. P.A.

AU - Akilli, E.

AU - Akimov, A. V.

AU - Alberghi, G. L.

AU - Albert, J.

AU - Albicocco, P.

AU - Alconada Verzini, M. J.

AU - Alderweireldt, S.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Alexandre, D.

AU - Alexopoulos, T.

AU - Alhroob, M.

AU - Ali, B.

AU - Alimonti, G.

AU - Alison, J.

AU - Alkire, S. P.

AU - Connell, S. H.

AU - Govender, N.

AU - Truong, L.

PY - 2019/4/29

Y1 - 2019/4/29

N2 - A measurement of the associated production of a top-quark pair (tt) with a vector boson (W, Z) in proton-proton collisions at a center-of-mass energy of 13 TeV is presented, using 36.1 fb-1 of integrated luminosity collected by the ATLAS detector at the Large Hadron Collider. Events are selected in channels with two same- or opposite-sign leptons (electrons or muons), three leptons or four leptons, and each channel is further divided into multiple regions to maximize the sensitivity of the measurement. The ttZ and ttW production cross sections are simultaneously measured using a combined fit to all regions. The best-fit values of the production cross sections are σttZ=0.95±0.08stat±0.10syst pb and σttW=0.87±0.13stat±0.14syst pb in agreement with the Standard Model predictions. The measurement of the ttZ cross section is used to set constraints on effective field theory operators which modify the ttZ vertex.

AB - A measurement of the associated production of a top-quark pair (tt) with a vector boson (W, Z) in proton-proton collisions at a center-of-mass energy of 13 TeV is presented, using 36.1 fb-1 of integrated luminosity collected by the ATLAS detector at the Large Hadron Collider. Events are selected in channels with two same- or opposite-sign leptons (electrons or muons), three leptons or four leptons, and each channel is further divided into multiple regions to maximize the sensitivity of the measurement. The ttZ and ttW production cross sections are simultaneously measured using a combined fit to all regions. The best-fit values of the production cross sections are σttZ=0.95±0.08stat±0.10syst pb and σttW=0.87±0.13stat±0.14syst pb in agreement with the Standard Model predictions. The measurement of the ttZ cross section is used to set constraints on effective field theory operators which modify the ttZ vertex.

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U2 - 10.1103/PhysRevD.99.072009

DO - 10.1103/PhysRevD.99.072009

M3 - Article

AN - SCOPUS:85072076489

SN - 2470-0010

VL - 99

JO - Physical Review D

JF - Physical Review D

IS - 7

M1 - 072009

ER -

Measurement of the tt¯Z and tt¯W cross sections in proton-proton collisions at s=13 TeV with the ATLAS detector

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