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

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Abazov, VM, Abbott, B, Acharya, BS, Adams, M, Adams, T, Agnew, JP, Alexeev, GD, Alkhazov, G, Alton, A, Askew, A et al (show 90 more authors) , Atkins, S, Augsten, K, Aushev, V, Aushev, Y, Avila, C, Badaud, F, Bagby, L, Baldin, B, Bandurin, DV, Banerjee, S, Barberis, E, Baringer, P, Bartlett, JF, Bassler, U, Bazterra, V, Bean, A, Begalli, M, Bellantoni, L, Beri, SB, Bernardi, G, Bernhard, R, Bertram, I, Besançon, M, Beuselinck, R, Bhat, PC, Bhatia, S, Bhatnagar, V, Blazey, G, Blessing, S, Bloom, K, Boehnlein, A, Boline, D, Boos, EE, Borissov, G, Borysova, M, Brandt, A, Brandt, O, Brock, R, Bross, A, Brown, D, Bu, XB, Buehler, M, Buescher, V, Bunichev, V, Burdin, S ORCID: 0000-0003-4831-4132, Buszello, CP, Camacho-Pérez, E, Casey, BCK, Castilla-Valdez, H, Caughron, S, Chakrabarti, S, Chan, KM, Chandra, A, Chapon, E, Chen, G, Cho, SW, Choi, S, Choudhary, B, Cihangir, S, Claes, D, Clutter, J, Cooke, M, Cooper, WE, Corcoran, M, Couderc, F, Cousinou, MC, Cuth, J, Cutts, D, Das, A, Davies, G, de Jong, SJ, De La Cruz-Burelo, E, Déliot, F, Demina, R, Denisov, D, Denisov, SP, Desai, S, Deterre, C, DeVaughan, K, Diehl, HT, Diesburg, M, Ding, PF, Dominguez, A, Dubey, A, Dudko, LV, Duperrin, A, Dutt, S, Eads, M, Edmunds, D and Ellison, J (2016) Measurement of spin correlation between top and antitop quarks produced in pp- collisions at √s = 1.96 TeV Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, 757. pp. 199-206. ISSN 0370-2693, 1873-2445

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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<inf>off</inf>=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.

Item Type:	Article
Additional Information:	Published version
Uncontrolled Keywords:	hep-ex, hep-ex
Depositing User:	Symplectic Admin
Date Deposited:	15 Feb 2019 16:25
Last Modified:	21 Apr 2026 23:25
DOI:	10.1016/j.physletb.2016.03.053
Open Access URL:	https://doi.org/10.1016/j.physletb.2016.03.053
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3032938
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