Measurement of the charge asymmetry in top-quark pair production in the lepton-plus-jets final state in pp collision data at √s = 8 TeV with the ATLAS detector

ATLAS Collaboration

doi:10.1140/epjc/s10052-016-3910-6

Measurement of the charge asymmetry in top-quark pair production in the lepton-plus-jets final state in pp collision data at √s = 8 TeV with the ATLAS detector

ATLAS Collaboration

European Organization for Nuclear Research
Aix-Marseille Université
University of Oklahoma
Academia Sinica, Institute Of Physics
Azerbaijan Academy of Sciences
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Michigan State University
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Boston University
Joint Institute for Nuclear Research, Dubna
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P.N. Lebedev Physical Institute of the Russian Academy of Sciences
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University of Victoria
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Universidad Nacional de La Plata
Horia Hulubei National Institute of Physics and Nuclear Engineering
National Technical University of Athens
Sezione INFN di Milano
University of Chicago
Columbia University
University of Sussex
University of Birmingham
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Niels Bohr Institutet
University of Washington
University of Cambridge
Laboratoire de Physique des Particules
University of Valencia
Ernest Orlando Lawrence Berkeley National Laboratory
High Energy Accelerator Research Organization (KEK)
Instituto de Biofisica da UFRJ
Brandeis University
University of Michigan, Ann Arbor
University of Coimbra
Faculdade de Ciências, Universidade de Lisboa
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Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
Novosibirsk State University
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University of Pisa
LNF-INFN
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Duke University
Universite de Montreal
University of Iowa
Bogazici University
University Bonn
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University of Illinois
Universität Siegen
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University of Johannesburg
Laboratoire de l'Accélérateur Linéaire
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Aristotle University of Thessaloniki
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Institute of High Energy Physics, Chinese Academy of Sciences
Yale University
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University of Wisconsin
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Harvard University
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Department of Biochemistry and Molecular and Structural Biology
and Physics University of Udine
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Long Beach VA and University of California
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University of South Carolina
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Sun Yat-Sen University
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Kyoto University of Education
Massachusetts Institute of Technology
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Wigner Research Centre for Physics
University Malaya

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

34 Citations (Scopus)

Résumé

This paper reports inclusive and differential measurements of the tt̄ charge asymmetry A_Cin 20.3 fb⁻¹of √s = 8 TeV pp collisions recorded by the ATLAS experiment at the Large Hadron Collider at CERN. Three differential measurements are performed as a function of the invariant mass, transverse momentum and longitudinal boost of the tt̄ system. The tt̄ pairs are selected in the single-lepton channels (e or μ) with at least four jets, and a likelihood fit is used to reconstruct the tt̄ event kinematics. A Bayesian unfolding procedure is performed to infer the asymmetry at parton level from the observed data distribution. The inclusive tt̄ charge asymmetry is measured to be A_C= 0.009 ± 0.005 (stat. + syst.). The inclusive and differential measurements are compatible with the values predicted by the Standard Model.

langue originale	Anglais
Numéro d'article	87
journal	European Physical Journal C
Volume	76
Numéro de publication	2
Les DOIs	https://doi.org/10.1140/epjc/s10052-016-3910-6
état	Publié - 1 janv. 2016
Modification externe	Oui

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10.1140/epjc/s10052-016-3910-6

Contient cette citation

@article{66b1a28fd4944d668410544676f277f0,

title = "Measurement of the charge asymmetry in top-quark pair production in the lepton-plus-jets final state in pp collision data at √s = 8 TeV with the ATLAS detector",

abstract = "This paper reports inclusive and differential measurements of the t{\=t} charge asymmetry ACin 20.3 fb−1of √s = 8 TeV pp collisions recorded by the ATLAS experiment at the Large Hadron Collider at CERN. Three differential measurements are performed as a function of the invariant mass, transverse momentum and longitudinal boost of the t{\=t} system. The t{\=t} pairs are selected in the single-lepton channels (e or μ) with at least four jets, and a likelihood fit is used to reconstruct the t{\=t} event kinematics. A Bayesian unfolding procedure is performed to infer the asymmetry at parton level from the observed data distribution. The inclusive t{\=t} charge asymmetry is measured to be AC= 0.009 ± 0.005 (stat. + syst.). The inclusive and differential measurements are compatible with the values predicted by the Standard Model.",

author = "\{ATLAS Collaboration\} and G. Aad and B. Abbott and J. Abdallah and O. Abdinov and R. Aben and M. Abolins and AbouZeid, \{O. S.\} and H. Abramowicz and H. Abreu and R. Abreu and Y. Abulaiti and Acharya, \{B. S.\} and L. Adamczyk and Adams, \{D. L.\} and J. Adelman and S. Adomeit and T. Adye and Affolder, \{A. A.\} and T. Agatonovic-Jovin and J. Agricola and Aguilar-Saavedra, \{J. A.\} and Ahlen, \{S. P.\} and F. Ahmadov and G. Aielli and H. Akerstedt and {\AA}kesson, \{T. P.A.\} and Akimov, \{A. V.\} and Alberghi, \{G. L.\} and J. Albert and S. Albrand and \{Alconada Verzini\}, \{M. J.\} and M. Aleksa and Aleksandrov, \{I. N.\} and C. Alexa and G. Alexander and T. Alexopoulos and M. Alhroob and G. Alimonti and L. Alio and J. Alison and Alkire, \{S. P.\} and Allbrooke, \{B. M.M.\} and Allport, \{P. P.\} and A. Aloisio and A. Alonso and F. Alonso and C. Alpigiani and A. Altheimer and T. Mueller and O. Simard",

note = "Publisher Copyright: {\textcopyright} CERN for the benefit of the ATLAS collaboration 2016.",

year = "2016",

month = jan,

day = "1",

doi = "10.1140/epjc/s10052-016-3910-6",

language = "English",

volume = "76",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Nature",

number = "2",

}

TY - JOUR

T1 - Measurement of the charge asymmetry in top-quark pair production in the lepton-plus-jets final state in pp collision data at √s = 8 TeV with the ATLAS detector

AU - ATLAS Collaboration

AU - Aad, G.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdinov, O.

AU - Aben, R.

AU - Abolins, M.

AU - AbouZeid, O. S.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abreu, R.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Adamczyk, L.

AU - Adams, D. L.

AU - Adelman, J.

AU - Adomeit, S.

AU - Adye, T.

AU - Affolder, A. A.

AU - Agatonovic-Jovin, T.

AU - Agricola, J.

AU - Aguilar-Saavedra, J. A.

AU - Ahlen, S. P.

AU - Ahmadov, F.

AU - Aielli, G.

AU - Akerstedt, H.

AU - Åkesson, T. P.A.

AU - Akimov, A. V.

AU - Alberghi, G. L.

AU - Albert, J.

AU - Albrand, S.

AU - Alconada Verzini, M. J.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Alexander, G.

AU - Alexopoulos, T.

AU - Alhroob, M.

AU - Alimonti, G.

AU - Alio, L.

AU - Alison, J.

AU - Alkire, S. P.

AU - Allbrooke, B. M.M.

AU - Allport, P. P.

AU - Aloisio, A.

AU - Alonso, A.

AU - Alonso, F.

AU - Alpigiani, C.

AU - Altheimer, A.

AU - Mueller, T.

AU - Simard, O.

PY - 2016/1/1

Y1 - 2016/1/1

N2 - This paper reports inclusive and differential measurements of the tt̄ charge asymmetry ACin 20.3 fb−1of √s = 8 TeV pp collisions recorded by the ATLAS experiment at the Large Hadron Collider at CERN. Three differential measurements are performed as a function of the invariant mass, transverse momentum and longitudinal boost of the tt̄ system. The tt̄ pairs are selected in the single-lepton channels (e or μ) with at least four jets, and a likelihood fit is used to reconstruct the tt̄ event kinematics. A Bayesian unfolding procedure is performed to infer the asymmetry at parton level from the observed data distribution. The inclusive tt̄ charge asymmetry is measured to be AC= 0.009 ± 0.005 (stat. + syst.). The inclusive and differential measurements are compatible with the values predicted by the Standard Model.

AB - This paper reports inclusive and differential measurements of the tt̄ charge asymmetry ACin 20.3 fb−1of √s = 8 TeV pp collisions recorded by the ATLAS experiment at the Large Hadron Collider at CERN. Three differential measurements are performed as a function of the invariant mass, transverse momentum and longitudinal boost of the tt̄ system. The tt̄ pairs are selected in the single-lepton channels (e or μ) with at least four jets, and a likelihood fit is used to reconstruct the tt̄ event kinematics. A Bayesian unfolding procedure is performed to infer the asymmetry at parton level from the observed data distribution. The inclusive tt̄ charge asymmetry is measured to be AC= 0.009 ± 0.005 (stat. + syst.). The inclusive and differential measurements are compatible with the values predicted by the Standard Model.

U2 - 10.1140/epjc/s10052-016-3910-6

DO - 10.1140/epjc/s10052-016-3910-6

M3 - Article

AN - SCOPUS:85010218965

SN - 1434-6044

VL - 76

JO - European Physical Journal C

JF - European Physical Journal C

IS - 2

M1 - 87

ER -

Measurement of the charge asymmetry in top-quark pair production in the lepton-plus-jets final state in pp collision data at √s = 8 TeV with the ATLAS detector

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