Measurement of spin correlation between top and antitop quarks produced in pp- collisions at √s = 1.96 TeV

D0 Collaboration

doi:10.1016/j.physletb.2016.03.053

Measurement of spin correlation between top and antitop quarks produced in pp- collisions at √s = 1.96 TeV

D0 Collaboration

Centro Brasileiro de Pesquisas Físicas
Joint Institute for Nuclear Research
University of Oklahoma
Tata Institute of Fundamental Research
University of Illinois at Chicago
Florida State University
University of Manchester
RAS - Saint Petersburg Nuclear Physics Institute
University of Michigan, Ann Arbor
Louisiana Tech University
Czech Technical University in Prague
Kyiv National Taras Shevchenko University
Universidad de los Andes Colombia
Université Blaise Pascal
Fermi National Accelerator Laboratory
University of Virginia
Northeastern University
University of Kansas
CEA Saclay
Universidade do Estado do Rio de Janeiro
Panjab University
UMR 7585
University of Freiburg
Lancaster University
Imperial College London
University of Mississippi
Northern Illinois University
University of Nebraska-Lincoln
Stony Brook University
Lomonosov Moscow State University
American Association for the Advancement of Science
University of Texas at Arlington
University of Göttingen
Michigan State University

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

19 Scopus citations

Abstract

We present a measurement of the correlation between the spins of t and t- quarks produced in proton-antiproton collisions at the Tevatron Collider at a center-of-mass energy of 1.96 TeV. We apply a matrix element technique to dilepton and single-lepton+jets final states in data accumulated with the D0 detector that correspond to an integrated luminosity of 9.7 fb^-1. The measured value of the correlation coefficient in the off-diagonal basis, O_off=0.89±0.22(stat+syst), is in agreement with the standard model prediction, and represents evidence for a top-antitop quark spin correlation difference from zero at a level of 4.2 standard deviations.

Original language	English
Pages (from-to)	199-206
Number of pages	8
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	757
DOIs	https://doi.org/10.1016/j.physletb.2016.03.053
State	Published - 10 Jun 2016

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10.1016/j.physletb.2016.03.053

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@article{8747fb0d39a44be7899cfa97121133ee,

title = "Measurement of spin correlation between top and antitop quarks produced in pp- collisions at √s = 1.96 TeV",

abstract = "We present a measurement of the correlation between the spins of t and t- quarks produced in proton-antiproton collisions at the Tevatron Collider at a center-of-mass energy of 1.96 TeV. We apply a matrix element technique to dilepton and single-lepton+jets final states in data accumulated with the D0 detector that correspond to an integrated luminosity of 9.7 fb-1. The measured value of the correlation coefficient in the off-diagonal basis, Ooff=0.89±0.22(stat+syst), is in agreement with the standard model prediction, and represents evidence for a top-antitop quark spin correlation difference from zero at a level of 4.2 standard deviations.",

author = "\{D0 Collaboration\} and Abazov, \{V. M.\} and B. Abbott and Acharya, \{B. S.\} and M. Adams and T. Adams and Agnew, \{J. P.\} and Alexeev, \{G. D.\} and G. Alkhazov and A. Alton and A. Askew and S. Atkins and K. Augsten and V. Aushev and Y. Aushev and C. Avila and F. Badaud and L. Bagby and B. Baldin and Bandurin, \{D. V.\} and S. Banerjee and E. Barberis and P. Baringer and Bartlett, \{J. F.\} and U. Bassler and V. Bazterra and A. Bean and M. Begalli and L. Bellantoni and Beri, \{S. B.\} and G. Bernardi and R. Bernhard and I. Bertram and M. Besan{\c c}on and R. Beuselinck and Bhat, \{P. C.\} and S. Bhatia and V. Bhatnagar and G. Blazey and S. Blessing and K. Bloom and A. Boehnlein and D. Boline and Boos, \{E. E.\} and G. Borissov and M. Borysova and A. Brandt and O. Brandt and R. Brock and A. Bross and Lee, \{S. W.\}",

note = "Publisher Copyright: {\textcopyright} 2016 The Authors.",

year = "2016",

month = jun,

day = "10",

doi = "10.1016/j.physletb.2016.03.053",

language = "English",

volume = "757",

pages = "199--206",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Measurement of spin correlation between top and antitop quarks produced in pp- collisions at √s = 1.96 TeV

AU - D0 Collaboration

AU - Abazov, V. M.

AU - Abbott, B.

AU - Acharya, B. S.

AU - Adams, M.

AU - Adams, T.

AU - Agnew, J. P.

AU - Alexeev, G. D.

AU - Alkhazov, G.

AU - Alton, A.

AU - Askew, A.

AU - Atkins, S.

AU - Augsten, K.

AU - Aushev, V.

AU - Aushev, Y.

AU - Avila, C.

AU - Badaud, F.

AU - Bagby, L.

AU - Baldin, B.

AU - Bandurin, D. V.

AU - Banerjee, S.

AU - Barberis, E.

AU - Baringer, P.

AU - Bartlett, J. F.

AU - Bassler, U.

AU - Bazterra, V.

AU - Bean, A.

AU - Begalli, M.

AU - Bellantoni, L.

AU - Beri, S. B.

AU - Bernardi, G.

AU - Bernhard, R.

AU - Bertram, I.

AU - Besançon, M.

AU - Beuselinck, R.

AU - Bhat, P. C.

AU - Bhatia, S.

AU - Bhatnagar, V.

AU - Blazey, G.

AU - Blessing, S.

AU - Bloom, K.

AU - Boehnlein, A.

AU - Boline, D.

AU - Boos, E. E.

AU - Borissov, G.

AU - Borysova, M.

AU - Brandt, A.

AU - Brandt, O.

AU - Brock, R.

AU - Bross, A.

AU - Lee, S. W.

PY - 2016/6/10

Y1 - 2016/6/10

N2 - We present a measurement of the correlation between the spins of t and t- quarks produced in proton-antiproton collisions at the Tevatron Collider at a center-of-mass energy of 1.96 TeV. We apply a matrix element technique to dilepton and single-lepton+jets final states in data accumulated with the D0 detector that correspond to an integrated luminosity of 9.7 fb-1. The measured value of the correlation coefficient in the off-diagonal basis, Ooff=0.89±0.22(stat+syst), is in agreement with the standard model prediction, and represents evidence for a top-antitop quark spin correlation difference from zero at a level of 4.2 standard deviations.

AB - We present a measurement of the correlation between the spins of t and t- quarks produced in proton-antiproton collisions at the Tevatron Collider at a center-of-mass energy of 1.96 TeV. We apply a matrix element technique to dilepton and single-lepton+jets final states in data accumulated with the D0 detector that correspond to an integrated luminosity of 9.7 fb-1. The measured value of the correlation coefficient in the off-diagonal basis, Ooff=0.89±0.22(stat+syst), is in agreement with the standard model prediction, and represents evidence for a top-antitop quark spin correlation difference from zero at a level of 4.2 standard deviations.

UR - https://www.scopus.com/pages/publications/84962674478

U2 - 10.1016/j.physletb.2016.03.053

DO - 10.1016/j.physletb.2016.03.053

M3 - Article

AN - SCOPUS:84962674478

SN - 0370-2693

VL - 757

SP - 199

EP - 206

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -

Measurement of spin correlation between top and antitop quarks produced in pp- collisions at √s = 1.96 TeV

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