Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV

The ATLAS collaboration

doi:10.1140/epjc/s10052-011-1577-6

Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV

The ATLAS collaboration

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

196 Scopus citations

Abstract

A measurement of the production cross-section for top quark pairs (tt̅) in pp collisions at √s =7 TeVis presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in two different topologies: single lepton (electron e or muon μ) with large missing transverse energy and at least four jets, and dilepton (ee, μμ or eμ) with large missing transverse energy and at least two jets. In a data sample of 2.9 pb^–1, 37 candidate events are observed in the single-lepton topology and 9 events in the dilepton topology. The corresponding expected backgrounds from non-tt̅ Standard Model processes are estimated using data-driven methods and determined to be 12.2 ± 3.9 events and 2.5± 0.6 events, respectively. The kinematic properties of the selected events are consistent with SM tt̅ production. The inclusive top quark pair production cross-section is measured to be The measurement agrees with perturbative QCD calculations.

Original language	English
Article number	1577
Journal	European Physical Journal C
Volume	71
Issue number	3
DOIs	https://doi.org/10.1140/epjc/s10052-011-1577-6
State	Published - 2011

Funding

Funders	Funder number
MECTS
Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS)
Stichting voor Fundamenteel Onderzoek der Materie
Australian Research Council
Centre National pour la Recherche Scientifique et Technique
DIP
ARTEMIS
Bundesministerium für Wissenschaft und Forschung
National Research Foundation of Korea
Comisión Nacional de Investigación Científica y Tecnológica
Healthcare Georgia Foundation
CEA-DSM
Japan Society for the Promotion of Science
INFN-CNAF
GNAS
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Ministerio de Ciencia e Innovación
Ministry of Science and Technology, Taiwan
Israel Science Foundation
Leverhulme Trust
Lundbeckfonden
Arizona-Nevada Academy of Science
Javna Agencija za Raziskovalno Dejavnost RS
National Science Council
Arkansas Space Grant Consortium
Instituto Nazionale di Fisica Nucleare
MSTD
Department of Science and Technology, Ministry of Science and Technology, India
MSMT
Türkiye Atom Enerjisi Kurumu
MSSR
CCRC
Max-Planck-Gesellschaft
Bundesministerium für Bildung und Forschung
Canada Foundation for Innovation
MVZT
Danmarks Grundforskningsfond
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Karlsruhe Institute of Technology
GridKA
Deutsche Forschungsgemeinschaft
U.S. Department of Energy
National Research Council
Fundação de Amparo à Pesquisa do Estado de São Paulo
MES of Russia
State Atomic Energy Corporation ROSATOM
Natural Sciences and Engineering Research Council of Canada
General Secretariat for Research and Technology
Nella and Leon Benoziyo Center for Neurological Diseases, Weizmann Institute of Science
MERYS
School of Energy Resources, University of Wyoming
DNSRC
Foundation
German-Israeli Foundation for Scientific Research and Development
Cantons of Bern and Geneva
Chinese Academy of Sciences
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Agencia Nacional de Promoción Científica y Tecnológica
Royal Society
Minerva Foundation
Ministerstwo Nauki i Szkolnictwa Wyższego
IRFU
CERN
Joint Institute for Nuclear Research
Ministerstvo Školství, Mládeže a Tělovýchovy
Brookhaven National Laboratory
Ministerstvo Průmyslu a Obchodu
Alexander von Humboldt-Stiftung
Council on grants of the President of the Russian Federation
Ministry of Education, Culture, Sports, Science and Technology
National Natural Science Foundation of China
Science and Technology Facilities Council	ST/F007337/1, ST/I005803/1, PP/E000347/1, ST/H001069/1, ST/H001026/1, ST/I006080/1, ST/H001077/1, PP/E003087/1, ST/I000186/1, ST/H001093/2, ST/H001093/1, GRIDPP, PP/E006388/1, ST/G502320/1, PP/E002838/1, PP/E000444/1, ST/H001026/2, PP/E003699/2, PP/E003699/1, ST/K00073X/1, ST/H000887/2
National Science Foundation	0955626, 0855405
Fundação para a Ciência e a Tecnologia	Incentivo/SAU/LA0001/2013
NDGF	CC-IN2P3
European Commission	IN2P3-CNRS
Not added	76019

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10.1140/epjc/s10052-011-1577-6

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title = "Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV",

abstract = "A measurement of the production cross-section for top quark pairs (tt̅) in pp collisions at √s =7 TeVis presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in two different topologies: single lepton (electron e or muon μ) with large missing transverse energy and at least four jets, and dilepton (ee, μμ or eμ) with large missing transverse energy and at least two jets. In a data sample of 2.9 pb–1, 37 candidate events are observed in the single-lepton topology and 9 events in the dilepton topology. The corresponding expected backgrounds from non-tt̅ Standard Model processes are estimated using data-driven methods and determined to be 12.2 ± 3.9 events and 2.5± 0.6 events, respectively. The kinematic properties of the selected events are consistent with SM tt̅ production. The inclusive top quark pair production cross-section is measured to be The measurement agrees with perturbative QCD calculations.",

author = "{The ATLAS collaboration} and G. Aad and B. Abbott and J. Abdallah and Abdelalim, {A. A.} and A. Abdesselam and O. Abdinov and B. Abi and M. Abolins and H. Abramowicz and H. Abreu and E. Acerbi and Acharya, {B. S.} and M. Ackers and Adams, {D. L.} and Addy, {T. N.} and J. Adelman and M. Aderholz and S. Adomeit and P. Adragna and T. Adye and S. Aefsky and Aguilar-Saavedra, {J. A.} and M. Aharrouche and Ahlen, {S. P.} and F. Ahles and A. Ahmad and H. Ahmed and M. Ahsan and G. Aielli and T. Akdogan and {\AA}kesson, {T. P.A.} and G. Akimoto and Akimov, {A. V.} and Alam, {M. S.} and Alam, {M. A.} and S. Albrand and M. Aleksa and Aleksandrov, {I. N.} and M. Aleppo and F. Alessandria and C. Alexa and G. Alexander and G. Alexandre and L. Barak and G. Bella and Y. Benhammou and E. Etzion and Y. Oren and Y. Silver and A. Soffer",

note = "Publisher Copyright: {\textcopyright} CERN for the benefit of the ATLAS collaboration 2011.",

year = "2011",

doi = "10.1140/epjc/s10052-011-1577-6",

language = "אנגלית",

volume = "71",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Nature",

number = "3",

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T1 - Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV

AU - The ATLAS collaboration

AU - Aad, G.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdelalim, A. A.

AU - Abdesselam, A.

AU - Abdinov, O.

AU - Abi, B.

AU - Abolins, M.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Acerbi, E.

AU - Acharya, B. S.

AU - Ackers, M.

AU - Adams, D. L.

AU - Addy, T. N.

AU - Adelman, J.

AU - Aderholz, M.

AU - Adomeit, S.

AU - Adragna, P.

AU - Adye, T.

AU - Aefsky, S.

AU - Aguilar-Saavedra, J. A.

AU - Aharrouche, M.

AU - Ahlen, S. P.

AU - Ahles, F.

AU - Ahmad, A.

AU - Ahmed, H.

AU - Ahsan, M.

AU - Aielli, G.

AU - Akdogan, T.

AU - Åkesson, T. P.A.

AU - Akimoto, G.

AU - Akimov, A. V.

AU - Alam, M. S.

AU - Alam, M. A.

AU - Albrand, S.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Aleppo, M.

AU - Alessandria, F.

AU - Alexa, C.

AU - Alexander, G.

AU - Alexandre, G.

AU - Barak, L.

AU - Bella, G.

AU - Benhammou, Y.

AU - Etzion, E.

AU - Oren, Y.

AU - Silver, Y.

AU - Soffer, A.

PY - 2011

Y1 - 2011

N2 - A measurement of the production cross-section for top quark pairs (tt̅) in pp collisions at √s =7 TeVis presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in two different topologies: single lepton (electron e or muon μ) with large missing transverse energy and at least four jets, and dilepton (ee, μμ or eμ) with large missing transverse energy and at least two jets. In a data sample of 2.9 pb–1, 37 candidate events are observed in the single-lepton topology and 9 events in the dilepton topology. The corresponding expected backgrounds from non-tt̅ Standard Model processes are estimated using data-driven methods and determined to be 12.2 ± 3.9 events and 2.5± 0.6 events, respectively. The kinematic properties of the selected events are consistent with SM tt̅ production. The inclusive top quark pair production cross-section is measured to be The measurement agrees with perturbative QCD calculations.

AB - A measurement of the production cross-section for top quark pairs (tt̅) in pp collisions at √s =7 TeVis presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in two different topologies: single lepton (electron e or muon μ) with large missing transverse energy and at least four jets, and dilepton (ee, μμ or eμ) with large missing transverse energy and at least two jets. In a data sample of 2.9 pb–1, 37 candidate events are observed in the single-lepton topology and 9 events in the dilepton topology. The corresponding expected backgrounds from non-tt̅ Standard Model processes are estimated using data-driven methods and determined to be 12.2 ± 3.9 events and 2.5± 0.6 events, respectively. The kinematic properties of the selected events are consistent with SM tt̅ production. The inclusive top quark pair production cross-section is measured to be The measurement agrees with perturbative QCD calculations.

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U2 - 10.1140/epjc/s10052-011-1577-6

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AN - SCOPUS:84876438744

SN - 1434-6044

VL - 71

JO - European Physical Journal C

JF - European Physical Journal C

IS - 3

M1 - 1577

ER -

Measurement of the top quark-pair production cross section with ATLAS in pp collisions at √s = 7 TeV

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