Lancaster EPrints

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

Abazov, V.M. and Abbott, B. and Acharya, B.S. and Adams, M. and Adams, T. and Agnew, J.P. and Alexeev, G.D. and Alkhazov, G. and Alton, A. and Askew, A. and Atkins, S. and Augsten, K. and Aushev, V. and Aushev, Y. and Avila, C. and Badaud, F. and Bagby, L. and Baldin, B. and Bandurin, D.V. and Banerjee, S. and Barberis, E. and Baringer, P. and Bartlett, J.F. and Bassler, U. and Bazterra, V. and Bean, A. and Begalli, M. and Bellantoni, L. and Beri, S.B. and Bernardi, G. and Bernhard, R. and Bertram, I. and Besançon, M. and Beuselinck, R. and Bhat, P.C. and Bhatia, S. and Bhatnagar, V. and Blazey, G. and Blessing, S. and Bloom, K. and Boehnlein, A. and Boline, D. and Boos, E.E. and Borissov, G. and Borysova, M. and Brandt, A. and Brandt, O. and Brock, R. and Bross, A. and Brown, D. and Bu, X.B. and Buehler, M. and Buescher, V. and Bunichev, V. and Burdin, S. and Buszello, C.P. and Camacho-Pérez, E. and Casey, B.C.K. and Castilla-Valdez, H. and Caughron, S. and Chakrabarti, S. and Chan, K.M. and Chandra, A. and Chapon, E. and Chen, G. and Cho, S.W. and Choi, S. and Choudhary, B. and Cihangir, S. and Claes, D. and Clutter, J. and Cooke, M. and Cooper, W.E. and Corcoran, M. and Couderc, F. and Cousinou, M.-C. and Cuth, J. and Cutts, D. and Das, A. and Davies, G. and de Jong, S.J. and De La Cruz-Burelo, E. and Déliot, F. and Demina, R. and Denisov, D. and Denisov, S.P. and Desai, S. and Deterre, C. and DeVaughan, K. and Diehl, H.T. and Diesburg, M. and Ding, P.F. and Dominguez, A. and Dubey, A. and Dudko, L.V. and Duperrin, A. and Dutt, S. and Eads, M. and Edmunds, D. and Ellison, J. and Elvira, V.D. and Enari, Y. and Evans, H. and Evdokimov, A. and Evdokimov, V.N. and Fauré, A. and Feng, L. and Ferbel, T. and Fiedler, F. and Filthaut, F. and Fisher, W. and Fisk, H.E. and Fortner, M. and Fox, H. and Franc, J. and Fuess, S. and Garbincius, P.H. and Garcia-Bellido, A. and García-González, J.A. and Gavrilov, V. and Geng, W. and Gerber, C.E. and Gershtein, Y. and Ginther, G. and Gogota, O. and Golovanov, G. and Grannis, P.D. and Greder, S. and Greenlee, H. and Grenier, G. and Gris, Ph. and Grivaz, J.-F. and Grohsjean, A. and Grünendahl, S. and Grünewald, M.W. and Guillemin, T. and Gutierrez, G. and Gutierrez, P. and Haley, J. and Han, L. and Harder, K. and Harel, A. and Hauptman, J.M. and Hays, J. and Head, T. and Hebbeker, T. and Hedin, D. and Hegab, H. and Heinson, A.P. and Heintz, U. and Hensel, C. and Heredia-De La Cruz, I. and Herner, K. and Hesketh, G. and Hildreth, M.D. and Hirosky, R. and Hoang, T. and Hobbs, J.D. and Hoeneisen, B. and Hogan, J. and Hohlfeld, M. and Holzbauer, J.L. and Howley, I. and Hubacek, Z. and Hynek, V. and Iashvili, I. and Ilchenko, Y. and Illingworth, R. and Ito, A.S. and Jabeen, S. and Jaffré, M. and Jayasinghe, A. and Jeong, M.S. and Jesik, R. and Jiang, P. and Johns, K. and Johnson, E. and Johnson, M. and Jonckheere, A. and Jonsson, P. and Joshi, J. and Jung, A.W. and Juste, A. and Kajfasz, E. and Karacheban, O. and Karmanov, D. and Katsanos, I. and Kaur, M. and Kehoe, R. and Kermiche, S. and Khalatyan, N. and Khanov, A. and Kharchilava, A. and Kharzheev, Y.N. and Kiselevich, I. and Kohli, J.M. and Kozelov, A.V. and Kraus, J. and Kumar, A. and Kupco, A. and Kurča, T. and Kuzmin, V.A. and Lammers, S. and Lebrun, P. and Lee, H.S. and Lee, S.W. and Lee, W.M. and Lei, X. and Lellouch, J. and Li, D. and Li, H. and Li, L. and Li, Q.Z. and Lim, J.K. and Lincoln, D. and Linnemann, J. and Lipaev, V.V. and Lipton, R. and Liu, H. and Liu, Y. and Lobodenko, A. and Lokajicek, M. and Lopes de Sa, R. and Luna-Garcia, R. and Lyon, A.L. and Maciel, A.K.A. and Madar, R. and Magaña-Villalba, R. and Malik, S. and Malyshev, V.L. and Mansour, J. and Martínez-Ortega, J. and McCarthy, R. and McGivern, C.L. and Meijer, M.M. and Melnitchouk, A. and Menezes, D. and Mercadante, P.G. and Merkin, M. and Meyer, A. and Meyer, J. and Miconi, F. and Mondal, N.K. and Mulhearn, M. and Nagy, E. and Narain, M. and Nayyar, R. and Neal, H.A. and Negret, J.P. and Neustroev, P. and Nguyen, H.T. and Nunnemann, T. and Orduna, J. and Osman, N. and Osta, J. and Pal, A. and Parashar, N. and Parihar, V. and Park, S.K. and Partridge, R. and Parua, N. and Patwa, A. and Penning, B. and Perfilov, M. and Peters, Y. and Petridis, K. and Petrillo, G. and Pétroff, P. and Pleier, M.-A. and Podstavkov, V.M. and Popov, A.V. and Prewitt, M. and Price, D. and Prokopenko, N. and Qian, J. and Quadt, A. and Quinn, B. and Ratoff, P.N. and Razumov, I. and Ripp-Baudot, I. and Rizatdinova, F. and Rominsky, M. and Ross, A. and Royon, C. and Rubinov, P. and Ruchti, R. and Sajot, G. and Sánchez-Hernández, A. and Sanders, M.P. and Santos, A.S. and Savage, G. and Savitskyi, M. and Sawyer, L. and Scanlon, T. and Schamberger, R.D. and Scheglov, Y. and Schellman, H. and Schott, M. and Schwanenberger, C. and Schwienhorst, R. and Sekaric, J. and Severini, H. and Shabalina, E. and Shary, V. and Shaw, S. and Shchukin, A.A. and Simak, V. and Skubic, P. and Slattery, P. and Smirnov, D. and Snow, G.R. and Snow, J. and Snyder, S. and Söldner-Rembold, S. and Sonnenschein, L. and Soustruznik, K. and Stark, J. and Stefaniuk, N. and Stoyanova, D.A. and Strauss, M. and Suter, L. and Svoisky, P. and Titov, M. and Tokmenin, V.V. and Tsai, Y.-T. and Tsybychev, D. and Tuchming, B. and Tully, C. and Uvarov, L. and Uvarov, S. and Uzunyan, S. and Van Kooten, R. and van Leeuwen, W.M. and Varelas, N. and Varnes, E.W. and Vasilyev, I.A. and Verkheev, A.Y. and Vertogradov, L.S. and Verzocchi, M. and Vesterinen, M. and Vilanova, D. and Vokac, P. and Wahl, H.D. and Wang, M.H.L.S. and Warchol, J. and Watts, G. and Wayne, M. and Weichert, J. and Welty-Rieger, L. and Williams, M.R.J. and Wilson, G.W. and Wobisch, M. and Wood, D.R. and Wyatt, T.R. and Xie, Y. and Yamada, R. and Yang, S. and Yasuda, T. and Yatsunenko, Y.A. and Ye, W. and Ye, Z. and Yin, H. and Yip, K. and Youn, S.W. and Yu, J.M. and Zennamo, J. and Zhao, T.G. and Zhou, B. and Zhu, J. and Zielinski, M. and Zieminska, D. and Zivkovic, L. (2016) Measurement of spin correlation between top and antitop quarks produced in pp¯ collisions at √s = 1.96 TeV. Physics Letters B, 757. pp. 199-206. ISSN 0370-2693

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    Abstract

    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.

    Item Type: Article
    Journal or Publication Title: Physics Letters B
    Additional Information: © 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.
    Subjects:
    Departments: Faculty of Science and Technology > Physics
    ID Code: 79120
    Deposited By: ep_importer_pure
    Deposited On: 19 Apr 2016 14:10
    Refereed?: Yes
    Published?: Published
    Last Modified: 21 Sep 2017 01:29
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/79120

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