Rights statement: © 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Measurement of spin correlation between top and antitop quarks produced in pp¯ collisions at √s = 1.96 TeV
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 - Fox, H.
AU - Ratoff, P.N.
AU - Ross, A.
AU - Williams, M.R.J.
AU - D0 Collaboration
N1 - © 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.
PY - 2016/6/10
Y1 - 2016/6/10
N2 - 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.
AB - 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.
U2 - 10.1016/j.physletb.2016.03.053
DO - 10.1016/j.physletb.2016.03.053
M3 - Journal article
VL - 757
SP - 199
EP - 206
JO - Physics Letters B
JF - Physics Letters B
SN - 0370-2693
ER -