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  • PhysRevLett.111.232002

    Rights statement: Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2013 CERN, for the ATLAS Collaboration

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Measurement of Top Quark Polarization in Top-Antitop Events from Proton-Proton Collisions at s√=7  TeV Using the ATLAS Detector

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Measurement of Top Quark Polarization in Top-Antitop Events from Proton-Proton Collisions at s√=7  TeV Using the ATLAS Detector. / The ATLAS collaboration.
In: Physical review letters, Vol. 111, No. 23, 232002, 04.12.2013.

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The ATLAS collaboration. Measurement of Top Quark Polarization in Top-Antitop Events from Proton-Proton Collisions at s√=7  TeV Using the ATLAS Detector. Physical review letters. 2013 Dec 4;111(23):232002. doi: 10.1103/PhysRevLett.111.232002

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@article{e49e469711bb49e389b32fe451f35bec,
title = "Measurement of Top Quark Polarization in Top-Antitop Events from Proton-Proton Collisions at s√=7  TeV Using the ATLAS Detector",
abstract = "This Letter presents measurements of the polarization of the top quark in top-antitop quark pair events, using 4.7  fb−1 of proton-proton collision data recorded with the ATLAS detector at the Large Hadron Collider at s√=7  TeV. Final states containing one or two isolated leptons (electrons or muons) and jets are considered. Two measurements of αℓP, the product of the leptonic spin-analyzing power and the top quark polarization, are performed assuming that the polarization is introduced by either a CP conserving or a maximally CP violating production process. The measurements obtained, αℓPCPC=−0.035±0.014(stat)±0.037(syst) and αℓPCPV=0.020±0.016(stat)+0.013−0.017(syst), are in good agreement with the standard model prediction of negligible top quark polarization.",
author = "Lee Allison and Adam Barton and Guennadi Borissov and Eva Bouhova-Thacker and James Catmore and Alexandre Chilingarov and William Dearnaley and Harald Fox and Kathryn Grimm and Robert Henderson and Gareth Hughes and Jones, {Roger William Lewis} and Vakhtang Kartvelishvili and Robin Long and Peter Love and Harvey Maddocks and Maria Smizanska and James Walder and {The ATLAS collaboration}",
note = "Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article{\textquoteright}s title, journal citation, and DOI. {\textcopyright} 2013 CERN, for the ATLAS Collaboration",
year = "2013",
month = dec,
day = "4",
doi = "10.1103/PhysRevLett.111.232002",
language = "English",
volume = "111",
journal = "Physical review letters",
issn = "1079-7114",
publisher = "American Physical Society",
number = "23",

}

RIS

TY - JOUR

T1 - Measurement of Top Quark Polarization in Top-Antitop Events from Proton-Proton Collisions at s√=7  TeV Using the ATLAS Detector

AU - Allison, Lee

AU - Barton, Adam

AU - Borissov, Guennadi

AU - Bouhova-Thacker, Eva

AU - Catmore, James

AU - Chilingarov, Alexandre

AU - Dearnaley, William

AU - Fox, Harald

AU - Grimm, Kathryn

AU - Henderson, Robert

AU - Hughes, Gareth

AU - Jones, Roger William Lewis

AU - Kartvelishvili, Vakhtang

AU - Long, Robin

AU - Love, Peter

AU - Maddocks, Harvey

AU - Smizanska, Maria

AU - Walder, James

AU - The ATLAS collaboration

N1 - Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2013 CERN, for the ATLAS Collaboration

PY - 2013/12/4

Y1 - 2013/12/4

N2 - This Letter presents measurements of the polarization of the top quark in top-antitop quark pair events, using 4.7  fb−1 of proton-proton collision data recorded with the ATLAS detector at the Large Hadron Collider at s√=7  TeV. Final states containing one or two isolated leptons (electrons or muons) and jets are considered. Two measurements of αℓP, the product of the leptonic spin-analyzing power and the top quark polarization, are performed assuming that the polarization is introduced by either a CP conserving or a maximally CP violating production process. The measurements obtained, αℓPCPC=−0.035±0.014(stat)±0.037(syst) and αℓPCPV=0.020±0.016(stat)+0.013−0.017(syst), are in good agreement with the standard model prediction of negligible top quark polarization.

AB - This Letter presents measurements of the polarization of the top quark in top-antitop quark pair events, using 4.7  fb−1 of proton-proton collision data recorded with the ATLAS detector at the Large Hadron Collider at s√=7  TeV. Final states containing one or two isolated leptons (electrons or muons) and jets are considered. Two measurements of αℓP, the product of the leptonic spin-analyzing power and the top quark polarization, are performed assuming that the polarization is introduced by either a CP conserving or a maximally CP violating production process. The measurements obtained, αℓPCPC=−0.035±0.014(stat)±0.037(syst) and αℓPCPV=0.020±0.016(stat)+0.013−0.017(syst), are in good agreement with the standard model prediction of negligible top quark polarization.

U2 - 10.1103/PhysRevLett.111.232002

DO - 10.1103/PhysRevLett.111.232002

M3 - Journal article

VL - 111

JO - Physical review letters

JF - Physical review letters

SN - 1079-7114

IS - 23

M1 - 232002

ER -