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Measurement of spin correlation in t(t)over-bar production using dilepton final states

Authors
Abazov, V. M.Abbott, B.Acharya, B. S.Adams, M.Adams, T.Alexeev, G. D.Alkhazov, G.Alton, A.Alverson, G.Alves, G. A.Ancu, L. S.Aoki, M.Arov, M.Askew, A.Asman, B.Atramentov, O.Avila, C.BackusMayes, J.Badaud, F.Bagby, L.Baldin, B.Bandurin, D. V.Baneree, S.Barberis, E.Baringer, P.Barreto, J.Bartlett, J. F.Bassler, U.Bazterra, V.Beale, S.Bean, A.Begalli, M.Begel, M.Belanger-Champagne, C.Bellantoni, L.Beri, S. B.Bernardi, G.Bernhard, R.Bertram, I.Besancon, M.Beuselinck, R.Bezzubov, V. A.Bhat, P. C.Bhatnagar, V.Blazey, G.Blessing, S.Bloom, K.Boehnlein, A.Boline, D.Bolton, T. A.Boos, E. E.Borissov, G.Bose, T.Brandt, A.Brandt, O.Brock, R.Brooijmans, G.Bross, A.Brown, D.Brown, J.Bu, X. B.Buehler, M.Buescher, V.Bunichev, V.Burdin, S.Burnett, T. H.Buszello, C. P.Calpas, B.Camacho-Perez, E.Carrasco-Lizarraga, M. A.Casey, B. C. K.Castilla-Valdez, H.Chakrabarti, S.Chakraborty, D.Chan, K. M.Chandra, A.Chen, G.Chevalier-Thery, S.Cho, D. K.Cho, S. W.Choi, S.Choudhary, B.Christoudias, T.Cihangir, S.Claes, D.Clutter, J.Cooke, M.Cooper, W. E.Corcoran, M.Couderc, F.Cousinou, M. -C.Croc, A.Cutts, D.Das, A.Davies, G.De, K.de Jong, S. J.De La Cruz-Burelo, E.Deliot, F.Demarteau, M.Demina, R.Denisov, D.Denisov, S. P.Desai, S.DeVaughan, K.Diehl, H. T.Diesburg, M.Dominguez, A.Dorland, T.Dubey, A.Dudko, L. V.Duggan, D.Duperrin, A.Dutt, S.Dyshkant, A.Eads, M.Edmunds, D.Ellison, J.Elvira, V. D.Enari, Y.Evans, H.Evdokimov, A.Evdokimov, V. N.Facini, G.Ferbel, T.Fiedler, F.Filthaut, F.Fisher, W.Fisk, H. E.Fortner, M.Fox, H.Fuess, S.Gadfort, T.Garcia-Bellido, A.Gavrilov, V.Gay, P.Geist, W.Geng, W.Gerbaudo, D.Gerber, C. E.Gershtein, Y.Ginther, G.Golovanov, G.Goussiou, A.Grannis, P. D.Greder, S.Greenlee, H.Greenwood, Z. D.Gregores, E. M.Grenier, G.Gris, Ph.Grivaz, J. -F.Grohsjean, A.Gruenendahl, S.Gruenewald, M. W.Guillemin, T.Guo, F.Gutierrez, G.Gutierrez, R.Haas, A.Hagopian, S.Haley, J.Han, L.Harder, K.Harel, A.Hauptman, J. M.Hays, J. J.Head, T.Hebbeker, T.Hedin, D.Hegab, H.Heinson, A. P.Heintz, U.Hensel, C.Heredia-De La Cruz, I.Herner, K.Hesketh, G.Hildreth, M. D.Hirosky, R.Hoang, T.Hobbs, J. D.Hoeneisen, B.Hohlfeld, M.Hubacek, Z.Huske, N.Hynek, V.Lashvili, I.Illingworth, R.Ito, A. S.Jabeen, S.Jaffre, M.Jamin, D.Jayasinghe, A.Jesik, R.Johns, K.Johnson, M.Johnston, D.Jonckheere, A.Jonsson, P.Joshi, J.Juste, A.Kaadze, K.Kajfasz, E.Karmanov, D.Kasper, P. A.Katsanos, I.Kehoe, R.Kermiche, S.Khalatyan, N.Khanov, A.Kharchilava, A.Kharzheev, Y. N.Khatidze, D.Kirby, M. H.Kohli, J. M.Kozelov, A. V.Kraus, J.Kulikov, S.Kumar, A.Kupco, A.Kurca, T.Kuzmin, V. A.Kvita, J.Lammers, S.Landsberg, G.Lebrun, R.Lee, H. S.Lee, S. W.Lee, W. M.Lellouch, J.Li, L.Li, Q. Z.Lietti, S. M.Lim, J. K.Lincoln, D.Linnemann, J.Lipaev, V. V.Lipton, R.Liu, Y.Liu, Z.Lobodenko, A.Lokajicek, M.de Sa, R. LopesLubatti, H. J.Luna-Garcia, R.Lyon, A. L.Maciel, A. K. A.Mackin, D.Madar, R.Magana-Villalba, R.Malik, S.Malyshev, V. L.Maravin, Y.Martinez-Ortega, J.McCarthy, R.McGivern, C. L.Meijer, M. M.Melnitchouk, A.Menezes, D.Mercadante, P. G.Merkin, M.Meyer, A.Meyer, J.Miconi, F.Mondal, N. K.Muanza, G. S.Mulhearn, M.Nagy, E.Naimuddin, M.Narain, M.Nayyar, R.Neal, H. A.Negret, J. P.Neustroev, P.Novaes, S. F.Nunnemann, T.Obrant, G.Orduna, J.Osman, N.Osta, J.Otero y Garzon, G. J.Padilla, M.Pal, A.Pangilinan, M.Parashar, N.Parihar, V.Park, S. K.Parsons, J.Partridge, R.Parua, N.Patwa, A.Penning, B.Perfilov, M.Peters, K.Peters, Y.Petridis, K.Petrillo, G.Petroff, R.Piegaia, R.Piper, J.Pleier, M. -A.Podesta-Lermaa, P. L. M.Podstavkov, V. M.Pol, M. -E.Polozov, R.Popov, A. V.Prewitt, M.Price, D.Prokopenko, N.Protopopescu, S.Qian, J.Quadt, A.Quinn, B.Rangel, M. S.Ranjan, K.Ratoff, P. N.Razumov, I.Renkel, R.Rijssenbeek, M.Ripp-Baudots, I.Rizatdinova, F.Rominsky, M.Ross, A.Royon, C.Rubinov, R.Ruchti, R.Safronov, G.Sajot, G.Salcido, P.Sanchez-Hernandez, A.Sanders, M. P.Sanghi, B.Santos, A. S.Savage, G.Sawyer, L.Scanlon, T.Schamberger, R. D.Scheglov, Y.Schellman, H.Schliephake, T.Schlobohm, S.Schwanenberger, C.Schwienhorst, R.Sekaric, J.Severini, H.Shabalina, E.Shary, V.Shchukin, A. A.Shivpuri, R. K.Simak, V.Sirotenko, V.Skubic, P.Slattery, R.Smirnov, D.Smith, K. J.Snow, G. R.Snow, J.Snyder, S.Soeldner-Rembold, S.Sonnenschein, L.Soustruznik, K.Stark, J.Stolin, V.Stoyanova, D. A.Strauss, M.Strom, D.Stutte, L.Suter, L.Svoisky, R.Takahashi, M.Tanasijczuk, A.Taylor, W.Titov, M.Tokmenin, V. V.Tsai, Y. -T.Tsybychev, D.Tuchming, B.Tully, C.Tuts, P. M.Uvarov, L.Uvarov, S.Uzunyan, S.Van Kooten, R.van Leeuwen, W. M.Varelas, N.Varnes, E. W.Vasilyev, I. A.Verdier, P.Vertogradov, L. S.Verzocchi, M.Vesterinen, M.Vilanova, D.Vint, R.Vokac, R.Wahl, H. D.Wang, M. H. L. S.Warchol, J.Watts, G.Wayne, M.Weber, M.Welty-Rieger, L.White, A.Wicke, D.Williams, M. R. J.Wilson, G. W.Wobisch, M.Wood, D. R.Wyatt, T. R.Xie, Y.Xu, C.Yacoob, S.Yamada, R.Yang, W. -C.Yasuda, T.Yatsunenko, V. A.Ye, Z.Yin, H.Yip, K.Youn, S. W.Yu, J.Zelitch, S.Zhao, T.Zhou, B.Zhu, J.Zielinski, M.Zieminska, D.Zivkovic, L.
Issue Date
3-8월-2011
Publisher
ELSEVIER
Keywords
Top quark; Spin; QCD
Citation
PHYSICS LETTERS B, v.702, no.1, pp.16 - 23
Indexed
SCIE
SCOPUS
Journal Title
PHYSICS LETTERS B
Volume
702
Number
1
Start Page
16
End Page
23
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/111813
DOI
10.1016/j.physletb.2011.05.077
ISSN
0370-2693
Abstract
We measure the correlation between the spin of the top quark and the spin of the anti-top quark in t (t) over bar -> W(+)bW(-)(b) over bar -> l(+)vbl(-) (v) over bar(b) over bar final states produced in p (p) over bar collisions at a center of mass energy root s = 1.96 TeV, where l is an electron or muon. The data correspond to an integrated luminosity of 5.4 fb(-1) and were collected with the D0 detector at the Fermilab Tevatron collider. The correlation is extracted from the angles of the two leptons in the t and (t) over bar rest frames, yielding a correlation strength C = 0.10(-0.45)(+0.45). in agreement with the NLO QCD prediction within two standard deviations, but also in agreement with the no correlation hypothesis. (C) 2011 Elsevier B.V. All rights reserved.
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