Evidence for Spin correlation in tt̄ production

V. M. Abazov, B. Abbott, B. S. Acharya, M. Adams, T. Adams, G. D. Alexeev, G. Alkhazov, A. Alton, G. Alverson, G. A. Alves, M. Aoki, A. Askew, B. Åsman, S. Atkins, O. Atramentov, K. Augsten, C. Avila, J. Backusmayes, F. Badaud, L. BagbyB. Baldin, D. V. Bandurin, S. Banerjee, E. Barberis, P. Baringer, J. Barreto, J. F. Bartlett, U. Bassler, V. Bazterra, A. Bean, M. Begalli, C. Belanger-Champagne, L. Bellantoni, S. B. Beri, G. Bernardi, R. Bernhard, I. Bertram, M. Besançon, R. Beuselinck, V. A. Bezzubov, P. C. Bhat, V. Bhatnagar, G. Blazey, S. Blessing, K. Bloom, A. Boehnlein, D. Boline, E. E. Boos, G. Borissov, T. Bose, A. Brandt, O. Brandt, R. Brock, G. Brooijmans, A. Bross, D. Brown, J. Brown, X. B. Bu, M. Buehler, V. Buescher, V. Bunichev, S. Burdin, T. H. Burnett, C. P. Buszello, B. Calpas, E. Camacho-Pérez, M. A. Carrasco-Lizarraga, B. C K Casey, H. Castilla-Valdez, S. Chakrabarti, D. Chakraborty, K. M. Chan, A. Chandra, E. Chapon, G. Chen, S. Chevalier-Théry, D. K. Cho, S. W. Cho, Suyong Choi, B. Choudhary, S. Cihangir, D. Claes, J. Clutter, M. Cooke, W. E. Cooper, M. Corcoran, F. Couderc, M. C. Cousinou, A. Croc, D. Cutts, A. Das, G. Davies, K. De, S. J. De Jong, E. De La Cruz-Burelo, F. Déliot, R. Demina, D. Denisov, S. P. Denisov, S. Desai, C. Deterre, K. Devaughan, H. T. Diehl, M. Diesburg, P. F. Ding, A. Dominguez, T. Dorland, A. Dubey, L. V. Dudko, D. Duggan, A. Duperrin, S. Dutt, A. Dyshkant, M. Eads, D. Edmunds, J. Ellison, V. D. Elvira, Y. Enari, H. Evans, A. Evdokimov, V. N. Evdokimov, G. Facini, T. Ferbel, F. Fiedler, F. Filthaut, W. Fisher, H. E. Fisk, M. Fortner, H. Fox, S. Fuess, A. Garcia-Bellido, G. A. García-Guerra, V. Gavrilov, P. Gay, W. Geng, D. Gerbaudo, C. E. Gerber, Y. Gershtein, G. Ginther, G. Golovanov, A. Goussiou, P. D. Grannis, S. Greder, H. Greenlee, Z. D. Greenwood, E. M. Gregores, G. Grenier, Ph Gris, J. F. Grivaz, A. Grohsjean, S. Grünendahl, M. W. Grünewald, T. Guillemin, G. Gutierrez, P. Gutierrez, A. Haas, S. Hagopian, J. Haley, L. Han, K. Harder, A. Harel, J. M. Hauptman, J. Hays, T. Head, T. Hebbeker, D. Hedin, H. Hegab, A. P. Heinson, U. Heintz, C. Hensel, I. Heredia-De La Cruz, K. Herner, G. Hesketh, M. D. Hildreth, R. Hirosky, T. Hoang, J. D. Hobbs, B. Hoeneisen, M. Hohlfeld, Z. Hubacek, V. Hynek, I. Iashvili, Y. Ilchenko, R. Illingworth, A. S. Ito, S. Jabeen, M. Jaffré, D. Jamin, A. Jayasinghe, R. Jesik, K. Johns, M. Johnson, A. Jonckheere, P. Jonsson, J. Joshi, A. W. Jung, A. Juste, K. Kaadze, E. Kajfasz, D. Karmanov, P. A. Kasper, I. Katsanos, R. Kehoe, S. Kermiche, N. Khalatyan, A. Khanov, A. Kharchilava, Y. N. Kharzheev, J. M. Kohli, A. V. Kozelov, J. Kraus, S. Kulikov, A. Kumar, A. Kupco, T. Kurča, V. A. Kuzmin, J. Kvita, S. Lammers, G. Landsberg, P. Lebrun, H. S. Lee, S. W. Lee, W. M. Lee, J. Lellouch, L. Li, Q. Z. Li, S. M. Lietti, J. K. Lim, D. Lincoln, J. Linnemann, V. V. Lipaev, R. Lipton, Y. Liu, A. Lobodenko, M. Lokajicek, R. Lopes De Sa, H. J. Lubatti, R. Luna-Garcia, A. L. Lyon, A. K A MacIel, D. MacKin, R. Madar, R. Magaña-Villalba, S. Malik, V. L. Malyshev, Y. Maravin, J. Martínez-Ortega, R. McCarthy, C. L. McGivern, M. M. Meijer, A. Melnitchouk, D. Menezes, P. G. Mercadante, M. Merkin, A. Meyer, J. Meyer, F. Miconi, N. K. Mondal, G. S. Muanza, M. Mulhearn, E. Nagy, M. Naimuddin, M. Narain, R. Nayyar, H. A. Neal, J. P. Negret, P. Neustroev, S. F. Novaes, T. Nunnemann, G. Obrant, J. Orduna, N. Osman, J. Osta, G. J. Otero Y Garzón, M. Padilla, A. Pal, N. Parashar, V. Parihar, Sung Keun Park, R. Partridge, N. Parua, A. Patwa, B. Penning, M. Perfilov, Y. Peters, K. Petridis, G. Petrillo, P. Pétroff, R. Piegaia, M. A. Pleier, P. L M Podesta-Lerma, V. M. Podstavkov, P. Polozov, A. V. Popov, M. Prewitt, D. Price, N. Prokopenko, J. Qian, A. Quadt, B. Quinn, M. S. Rangel, K. Ranjan, P. N. Ratoff, I. Razumov, P. Renkel, M. Rijssenbeek, I. Ripp-Baudot, F. Rizatdinova, M. Rominsky, A. Ross, C. Royon, P. Rubinov, R. Ruchti, G. Safronov, G. Sajot, P. Salcido, A. Sánchez-Hernández, M. P. Sanders, B. Sanghi, A. S. Santos, G. Savage, L. Sawyer, T. Scanlon, R. D. Schamberger, Y. Scheglov, H. Schellman, T. Schliephake, S. Schlobohm, C. Schwanenberger, R. Schwienhorst, J. Sekaric, H. Severini, E. Shabalina, V. Shary, A. A. Shchukin, R. K. Shivpuri, V. Simak, V. Sirotenko, P. Skubic, P. Slattery, D. Smirnov, K. J. Smith, G. R. Snow, J. Snow, S. Snyder, S. Söldner-Rembold, L. Sonnenschein, K. Soustruznik, J. Stark, V. Stolin, D. A. Stoyanova, M. Strauss, D. Strom, L. Stutte, L. Suter, P. Svoisky, M. Takahashi, A. Tanasijczuk, M. Titov, V. V. Tokmenin, Y. T. Tsai, K. Tschann-Grimm, D. Tsybychev, B. Tuchming, C. Tully, L. Uvarov, S. Uvarov, S. Uzunyan, R. Van Kooten, W. M. Van Leeuwen, N. Varelas, E. W. Varnes, I. A. Vasilyev, P. Verdier, L. S. Vertogradov, M. Verzocchi, M. Vesterinen, D. Vilanova, P. Vokac, H. D. Wahl, M. H L S Wang, J. Warchol, G. Watts, M. Wayne, M. Weber, L. Welty-Rieger, A. White, D. Wicke, M. R J Williams, G. W. Wilson, M. Wobisch, D. R. Wood, T. R. Wyatt, Y. Xie, R. Yamada, W. C. Yang, T. Yasuda, Y. A. Yatsunenko, Z. Ye, H. Yin, K. Yip, S. W. Youn, J. Yu, T. Zhao, B. Zhou, J. Zhu, M. Zielinski, D. Zieminska, L. Zivkovic

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

We present a measurement of the ratio of events with correlated t and t̄ spins to the total number of tt̄ events. This ratio f is evaluated using a matrix-element-based approach in 729 tt̄ candidate events with a single lepton (electron or muon) and at least four jets. The analyzed pp̄ collisions data correspond to an integrated luminosity of 5.3fb -1 and were collected with the D0 detector at the Fermilab Tevatron collider operating at a center-of-mass energy √s=1.96TeV. Combining this result with a recent measurement of f in dileptonic final states, we find f in agreement with the standard model. In addition, the combination provides evidence for the presence of spin correlation in tt̄ events with a significance of more than 3 standard deviations.

Original languageEnglish
Article number032004
JournalPhysical Review Letters
Volume108
Issue number3
DOIs
Publication statusPublished - 2012 Jan 19

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center of mass
leptons
muons
standard deviation
luminosity
collisions
detectors
matrices
electrons
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Abazov, V. M., Abbott, B., Acharya, B. S., Adams, M., Adams, T., Alexeev, G. D., ... Zivkovic, L. (2012). Evidence for Spin correlation in tt̄ production. Physical Review Letters, 108(3), [032004]. https://doi.org/10.1103/PhysRevLett.108.032004

Evidence for Spin correlation in tt̄ production. / Abazov, V. M.; Abbott, B.; Acharya, B. S.; Adams, M.; Adams, T.; Alexeev, G. D.; Alkhazov, G.; Alton, A.; Alverson, G.; Alves, G. A.; Aoki, M.; Askew, A.; Åsman, B.; Atkins, S.; Atramentov, O.; Augsten, K.; Avila, C.; Backusmayes, J.; Badaud, F.; Bagby, L.; Baldin, B.; Bandurin, D. V.; Banerjee, S.; Barberis, E.; Baringer, P.; Barreto, J.; Bartlett, J. F.; Bassler, U.; Bazterra, V.; Bean, A.; Begalli, M.; Belanger-Champagne, C.; Bellantoni, L.; Beri, S. B.; Bernardi, G.; Bernhard, R.; Bertram, I.; Besançon, M.; Beuselinck, R.; Bezzubov, V. A.; Bhat, P. C.; Bhatnagar, V.; Blazey, G.; Blessing, S.; Bloom, K.; Boehnlein, A.; Boline, D.; 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-Pérez, E.; Carrasco-Lizarraga, M. A.; Casey, B. C K; Castilla-Valdez, H.; Chakrabarti, S.; Chakraborty, D.; Chan, K. M.; Chandra, A.; Chapon, E.; Chen, G.; Chevalier-Théry, S.; Cho, D. K.; Cho, S. W.; Choi, Suyong; Choudhary, B.; 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.; Déliot, F.; Demina, R.; Denisov, D.; Denisov, S. P.; Desai, S.; Deterre, C.; Devaughan, K.; Diehl, H. T.; Diesburg, M.; Ding, P. F.; 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.; Garcia-Bellido, A.; García-Guerra, G. A.; Gavrilov, V.; Gay, P.; 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.; Grünendahl, S.; Grünewald, M. W.; Guillemin, T.; Gutierrez, G.; Gutierrez, P.; Haas, A.; Hagopian, S.; Haley, J.; Han, L.; Harder, K.; Harel, A.; Hauptman, J. M.; Hays, 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.; Hynek, V.; Iashvili, I.; Ilchenko, Y.; Illingworth, R.; Ito, A. S.; Jabeen, S.; Jaffré, M.; Jamin, D.; Jayasinghe, A.; Jesik, R.; Johns, K.; Johnson, M.; Jonckheere, A.; Jonsson, P.; Joshi, J.; Jung, A. W.; 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.; Kohli, J. M.; Kozelov, A. V.; Kraus, J.; Kulikov, S.; Kumar, A.; Kupco, A.; Kurča, T.; Kuzmin, V. A.; Kvita, J.; Lammers, S.; Landsberg, G.; Lebrun, P.; 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.; Lobodenko, A.; Lokajicek, M.; Lopes De Sa, R.; Lubatti, H. J.; Luna-Garcia, R.; Lyon, A. L.; MacIel, A. K A; MacKin, D.; Madar, R.; Magaña-Villalba, R.; Malik, S.; Malyshev, V. L.; Maravin, Y.; Martínez-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 Garzón, G. J.; Padilla, M.; Pal, A.; Parashar, N.; Parihar, V.; Park, Sung Keun; Partridge, R.; Parua, N.; Patwa, A.; Penning, B.; Perfilov, M.; Peters, Y.; Petridis, K.; Petrillo, G.; Pétroff, P.; Piegaia, R.; Pleier, M. A.; Podesta-Lerma, P. L M; Podstavkov, V. M.; Polozov, P.; Popov, A. V.; Prewitt, M.; Price, D.; Prokopenko, N.; Qian, J.; Quadt, A.; Quinn, B.; Rangel, M. S.; Ranjan, K.; Ratoff, P. N.; Razumov, I.; Renkel, P.; Rijssenbeek, M.; Ripp-Baudot, I.; Rizatdinova, F.; Rominsky, M.; Ross, A.; Royon, C.; Rubinov, P.; Ruchti, R.; Safronov, G.; Sajot, G.; Salcido, P.; Sánchez-Hernández, 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, P.; Smirnov, D.; Smith, K. J.; Snow, G. R.; Snow, J.; Snyder, S.; Söldner-Rembold, S.; Sonnenschein, L.; Soustruznik, K.; Stark, J.; Stolin, V.; Stoyanova, D. A.; Strauss, M.; Strom, D.; Stutte, L.; Suter, L.; Svoisky, P.; Takahashi, M.; Tanasijczuk, A.; Titov, M.; Tokmenin, V. V.; Tsai, Y. T.; Tschann-Grimm, K.; Tsybychev, D.; Tuchming, B.; Tully, C.; 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.; Vokac, P.; 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.; Yamada, R.; Yang, W. C.; Yasuda, T.; Yatsunenko, Y. A.; Ye, Z.; Yin, H.; Yip, K.; Youn, S. W.; Yu, J.; Zhao, T.; Zhou, B.; Zhu, J.; Zielinski, M.; Zieminska, D.; Zivkovic, L.

In: Physical Review Letters, Vol. 108, No. 3, 032004, 19.01.2012.

Research output: Contribution to journalArticle

Abazov, VM, Abbott, B, Acharya, BS, Adams, M, Adams, T, Alexeev, GD, Alkhazov, G, Alton, A, Alverson, G, Alves, GA, Aoki, M, Askew, A, Åsman, B, Atkins, S, Atramentov, O, Augsten, K, Avila, C, Backusmayes, J, Badaud, F, Bagby, L, Baldin, B, Bandurin, DV, Banerjee, S, Barberis, E, Baringer, P, Barreto, J, Bartlett, JF, Bassler, U, Bazterra, V, Bean, A, Begalli, M, Belanger-Champagne, C, Bellantoni, L, Beri, SB, Bernardi, G, Bernhard, R, Bertram, I, Besançon, M, Beuselinck, R, Bezzubov, VA, Bhat, PC, Bhatnagar, V, Blazey, G, Blessing, S, Bloom, K, Boehnlein, A, Boline, D, Boos, EE, Borissov, G, Bose, T, Brandt, A, Brandt, O, Brock, R, Brooijmans, G, Bross, A, Brown, D, Brown, J, Bu, XB, Buehler, M, Buescher, V, Bunichev, V, Burdin, S, Burnett, TH, Buszello, CP, Calpas, B, Camacho-Pérez, E, Carrasco-Lizarraga, MA, Casey, BCK, Castilla-Valdez, H, Chakrabarti, S, Chakraborty, D, Chan, KM, Chandra, A, Chapon, E, Chen, G, Chevalier-Théry, S, Cho, DK, Cho, SW, Choi, S, Choudhary, B, Cihangir, S, Claes, D, Clutter, J, Cooke, M, Cooper, WE, Corcoran, M, Couderc, F, Cousinou, MC, Croc, A, Cutts, D, Das, A, Davies, G, De, K, 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, Dorland, T, Dubey, A, Dudko, LV, Duggan, D, Duperrin, A, Dutt, S, Dyshkant, A, Eads, M, Edmunds, D, Ellison, J, Elvira, VD, Enari, Y, Evans, H, Evdokimov, A, Evdokimov, VN, Facini, G, Ferbel, T, Fiedler, F, Filthaut, F, Fisher, W, Fisk, HE, Fortner, M, Fox, H, Fuess, S, Garcia-Bellido, A, García-Guerra, GA, Gavrilov, V, Gay, P, Geng, W, Gerbaudo, D, Gerber, CE, Gershtein, Y, Ginther, G, Golovanov, G, Goussiou, A, Grannis, PD, Greder, S, Greenlee, H, Greenwood, ZD, Gregores, EM, Grenier, G, Gris, P, Grivaz, JF, Grohsjean, A, Grünendahl, S, Grünewald, MW, Guillemin, T, Gutierrez, G, Gutierrez, P, Haas, A, Hagopian, S, Haley, J, Han, L, Harder, K, Harel, A, Hauptman, JM, Hays, J, Head, T, Hebbeker, T, Hedin, D, Hegab, H, Heinson, AP, Heintz, U, Hensel, C, Heredia-De La Cruz, I, Herner, K, Hesketh, G, Hildreth, MD, Hirosky, R, Hoang, T, Hobbs, JD, Hoeneisen, B, Hohlfeld, M, Hubacek, Z, Hynek, V, Iashvili, I, Ilchenko, Y, Illingworth, R, Ito, AS, Jabeen, S, Jaffré, M, Jamin, D, Jayasinghe, A, Jesik, R, Johns, K, Johnson, M, Jonckheere, A, Jonsson, P, Joshi, J, Jung, AW, Juste, A, Kaadze, K, Kajfasz, E, Karmanov, D, Kasper, PA, Katsanos, I, Kehoe, R, Kermiche, S, Khalatyan, N, Khanov, A, Kharchilava, A, Kharzheev, YN, Kohli, JM, Kozelov, AV, Kraus, J, Kulikov, S, Kumar, A, Kupco, A, Kurča, T, Kuzmin, VA, Kvita, J, Lammers, S, Landsberg, G, Lebrun, P, Lee, HS, Lee, SW, Lee, WM, Lellouch, J, Li, L, Li, QZ, Lietti, SM, Lim, JK, Lincoln, D, Linnemann, J, Lipaev, VV, Lipton, R, Liu, Y, Lobodenko, A, Lokajicek, M, Lopes De Sa, R, Lubatti, HJ, Luna-Garcia, R, Lyon, AL, MacIel, AKA, MacKin, D, Madar, R, Magaña-Villalba, R, Malik, S, Malyshev, VL, Maravin, Y, Martínez-Ortega, J, McCarthy, R, McGivern, CL, Meijer, MM, Melnitchouk, A, Menezes, D, Mercadante, PG, Merkin, M, Meyer, A, Meyer, J, Miconi, F, Mondal, NK, Muanza, GS, Mulhearn, M, Nagy, E, Naimuddin, M, Narain, M, Nayyar, R, Neal, HA, Negret, JP, Neustroev, P, Novaes, SF, Nunnemann, T, Obrant, G, Orduna, J, Osman, N, Osta, J, Otero Y Garzón, GJ, Padilla, M, Pal, A, Parashar, N, Parihar, V, Park, SK, Partridge, R, Parua, N, Patwa, A, Penning, B, Perfilov, M, Peters, Y, Petridis, K, Petrillo, G, Pétroff, P, Piegaia, R, Pleier, MA, Podesta-Lerma, PLM, Podstavkov, VM, Polozov, P, Popov, AV, Prewitt, M, Price, D, Prokopenko, N, Qian, J, Quadt, A, Quinn, B, Rangel, MS, Ranjan, K, Ratoff, PN, Razumov, I, Renkel, P, Rijssenbeek, M, Ripp-Baudot, I, Rizatdinova, F, Rominsky, M, Ross, A, Royon, C, Rubinov, P, Ruchti, R, Safronov, G, Sajot, G, Salcido, P, Sánchez-Hernández, A, Sanders, MP, Sanghi, B, Santos, AS, Savage, G, Sawyer, L, Scanlon, T, Schamberger, RD, Scheglov, Y, Schellman, H, Schliephake, T, Schlobohm, S, Schwanenberger, C, Schwienhorst, R, Sekaric, J, Severini, H, Shabalina, E, Shary, V, Shchukin, AA, Shivpuri, RK, Simak, V, Sirotenko, V, Skubic, P, Slattery, P, Smirnov, D, Smith, KJ, Snow, GR, Snow, J, Snyder, S, Söldner-Rembold, S, Sonnenschein, L, Soustruznik, K, Stark, J, Stolin, V, Stoyanova, DA, Strauss, M, Strom, D, Stutte, L, Suter, L, Svoisky, P, Takahashi, M, Tanasijczuk, A, Titov, M, Tokmenin, VV, Tsai, YT, Tschann-Grimm, K, Tsybychev, D, Tuchming, B, Tully, C, Uvarov, L, Uvarov, S, Uzunyan, S, Van Kooten, R, Van Leeuwen, WM, Varelas, N, Varnes, EW, Vasilyev, IA, Verdier, P, Vertogradov, LS, Verzocchi, M, Vesterinen, M, Vilanova, D, Vokac, P, Wahl, HD, Wang, MHLS, Warchol, J, Watts, G, Wayne, M, Weber, M, Welty-Rieger, L, White, A, Wicke, D, Williams, MRJ, Wilson, GW, Wobisch, M, Wood, DR, Wyatt, TR, Xie, Y, Yamada, R, Yang, WC, Yasuda, T, Yatsunenko, YA, Ye, Z, Yin, H, Yip, K, Youn, SW, Yu, J, Zhao, T, Zhou, B, Zhu, J, Zielinski, M, Zieminska, D & Zivkovic, L 2012, 'Evidence for Spin correlation in tt̄ production', Physical Review Letters, vol. 108, no. 3, 032004. https://doi.org/10.1103/PhysRevLett.108.032004
Abazov VM, Abbott B, Acharya BS, Adams M, Adams T, Alexeev GD et al. Evidence for Spin correlation in tt̄ production. Physical Review Letters. 2012 Jan 19;108(3). 032004. https://doi.org/10.1103/PhysRevLett.108.032004
Abazov, V. M. ; Abbott, B. ; Acharya, B. S. ; Adams, M. ; Adams, T. ; Alexeev, G. D. ; Alkhazov, G. ; Alton, A. ; Alverson, G. ; Alves, G. A. ; Aoki, M. ; Askew, A. ; Åsman, B. ; Atkins, S. ; Atramentov, O. ; Augsten, K. ; Avila, C. ; Backusmayes, J. ; Badaud, F. ; Bagby, L. ; Baldin, B. ; Bandurin, D. V. ; Banerjee, S. ; Barberis, E. ; Baringer, P. ; Barreto, J. ; Bartlett, J. F. ; Bassler, U. ; Bazterra, V. ; Bean, A. ; Begalli, M. ; Belanger-Champagne, C. ; Bellantoni, L. ; Beri, S. B. ; Bernardi, G. ; Bernhard, R. ; Bertram, I. ; Besançon, M. ; Beuselinck, R. ; Bezzubov, V. A. ; Bhat, P. C. ; Bhatnagar, V. ; Blazey, G. ; Blessing, S. ; Bloom, K. ; Boehnlein, A. ; Boline, D. ; 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-Pérez, E. ; Carrasco-Lizarraga, M. A. ; Casey, B. C K ; Castilla-Valdez, H. ; Chakrabarti, S. ; Chakraborty, D. ; Chan, K. M. ; Chandra, A. ; Chapon, E. ; Chen, G. ; Chevalier-Théry, S. ; Cho, D. K. ; Cho, S. W. ; Choi, Suyong ; Choudhary, B. ; 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. ; Déliot, F. ; Demina, R. ; Denisov, D. ; Denisov, S. P. ; Desai, S. ; Deterre, C. ; Devaughan, K. ; Diehl, H. T. ; Diesburg, M. ; Ding, P. F. ; 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. ; Garcia-Bellido, A. ; García-Guerra, G. A. ; Gavrilov, V. ; Gay, P. ; 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. ; Grünendahl, S. ; Grünewald, M. W. ; Guillemin, T. ; Gutierrez, G. ; Gutierrez, P. ; Haas, A. ; Hagopian, S. ; Haley, J. ; Han, L. ; Harder, K. ; Harel, A. ; Hauptman, J. M. ; Hays, 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. ; Hynek, V. ; Iashvili, I. ; Ilchenko, Y. ; Illingworth, R. ; Ito, A. S. ; Jabeen, S. ; Jaffré, M. ; Jamin, D. ; Jayasinghe, A. ; Jesik, R. ; Johns, K. ; Johnson, M. ; Jonckheere, A. ; Jonsson, P. ; Joshi, J. ; Jung, A. W. ; 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. ; Kohli, J. M. ; Kozelov, A. V. ; Kraus, J. ; Kulikov, S. ; Kumar, A. ; Kupco, A. ; Kurča, T. ; Kuzmin, V. A. ; Kvita, J. ; Lammers, S. ; Landsberg, G. ; Lebrun, P. ; 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. ; Lobodenko, A. ; Lokajicek, M. ; Lopes De Sa, R. ; Lubatti, H. J. ; Luna-Garcia, R. ; Lyon, A. L. ; MacIel, A. K A ; MacKin, D. ; Madar, R. ; Magaña-Villalba, R. ; Malik, S. ; Malyshev, V. L. ; Maravin, Y. ; Martínez-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 Garzón, G. J. ; Padilla, M. ; Pal, A. ; Parashar, N. ; Parihar, V. ; Park, Sung Keun ; Partridge, R. ; Parua, N. ; Patwa, A. ; Penning, B. ; Perfilov, M. ; Peters, Y. ; Petridis, K. ; Petrillo, G. ; Pétroff, P. ; Piegaia, R. ; Pleier, M. A. ; Podesta-Lerma, P. L M ; Podstavkov, V. M. ; Polozov, P. ; Popov, A. V. ; Prewitt, M. ; Price, D. ; Prokopenko, N. ; Qian, J. ; Quadt, A. ; Quinn, B. ; Rangel, M. S. ; Ranjan, K. ; Ratoff, P. N. ; Razumov, I. ; Renkel, P. ; Rijssenbeek, M. ; Ripp-Baudot, I. ; Rizatdinova, F. ; Rominsky, M. ; Ross, A. ; Royon, C. ; Rubinov, P. ; Ruchti, R. ; Safronov, G. ; Sajot, G. ; Salcido, P. ; Sánchez-Hernández, 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, P. ; Smirnov, D. ; Smith, K. J. ; Snow, G. R. ; Snow, J. ; Snyder, S. ; Söldner-Rembold, S. ; Sonnenschein, L. ; Soustruznik, K. ; Stark, J. ; Stolin, V. ; Stoyanova, D. A. ; Strauss, M. ; Strom, D. ; Stutte, L. ; Suter, L. ; Svoisky, P. ; Takahashi, M. ; Tanasijczuk, A. ; Titov, M. ; Tokmenin, V. V. ; Tsai, Y. T. ; Tschann-Grimm, K. ; Tsybychev, D. ; Tuchming, B. ; Tully, C. ; 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. ; Vokac, P. ; 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. ; Yamada, R. ; Yang, W. C. ; Yasuda, T. ; Yatsunenko, Y. A. ; Ye, Z. ; Yin, H. ; Yip, K. ; Youn, S. W. ; Yu, J. ; Zhao, T. ; Zhou, B. ; Zhu, J. ; Zielinski, M. ; Zieminska, D. ; Zivkovic, L. / Evidence for Spin correlation in tt̄ production. In: Physical Review Letters. 2012 ; Vol. 108, No. 3.
@article{b5c17af49a8d4856a4ca6d496095c640,
title = "Evidence for Spin correlation in tt̄ production",
abstract = "We present a measurement of the ratio of events with correlated t and t̄ spins to the total number of tt̄ events. This ratio f is evaluated using a matrix-element-based approach in 729 tt̄ candidate events with a single lepton (electron or muon) and at least four jets. The analyzed pp̄ collisions data correspond to an integrated luminosity of 5.3fb -1 and were collected with the D0 detector at the Fermilab Tevatron collider operating at a center-of-mass energy √s=1.96TeV. Combining this result with a recent measurement of f in dileptonic final states, we find f in agreement with the standard model. In addition, the combination provides evidence for the presence of spin correlation in tt̄ events with a significance of more than 3 standard deviations.",
author = "Abazov, {V. M.} and B. Abbott and Acharya, {B. S.} and M. Adams and T. Adams and Alexeev, {G. D.} and G. Alkhazov and A. Alton and G. Alverson and Alves, {G. A.} and M. Aoki and A. Askew and B. {\AA}sman and S. Atkins and O. Atramentov and K. Augsten and C. Avila and J. Backusmayes and F. Badaud and L. Bagby and B. Baldin and Bandurin, {D. V.} and S. Banerjee and E. Barberis and P. Baringer and J. Barreto and Bartlett, {J. F.} and U. Bassler and V. Bazterra and A. Bean and M. Begalli and C. Belanger-Champagne and L. Bellantoni and Beri, {S. B.} and G. Bernardi and R. Bernhard and I. Bertram and M. Besan{\cc}on and R. Beuselinck and Bezzubov, {V. A.} and Bhat, {P. C.} 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 T. Bose and A. Brandt and O. Brandt and R. Brock and G. Brooijmans and A. Bross and D. Brown and J. Brown and Bu, {X. B.} and M. Buehler and V. Buescher and V. Bunichev and S. Burdin and Burnett, {T. H.} and Buszello, {C. P.} and B. Calpas and E. Camacho-P{\'e}rez and Carrasco-Lizarraga, {M. A.} and Casey, {B. C K} and H. Castilla-Valdez and S. Chakrabarti and D. Chakraborty and Chan, {K. M.} and A. Chandra and E. Chapon and G. Chen and S. Chevalier-Th{\'e}ry and Cho, {D. K.} and Cho, {S. W.} and Suyong Choi and B. Choudhary and S. Cihangir and D. Claes and J. Clutter and M. Cooke and Cooper, {W. E.} and M. Corcoran and F. Couderc and Cousinou, {M. C.} and A. Croc and D. Cutts and A. Das and G. Davies and K. De and {De Jong}, {S. J.} and {De La Cruz-Burelo}, E. and F. D{\'e}liot and R. Demina and D. Denisov and Denisov, {S. P.} and S. Desai and C. Deterre and K. Devaughan and Diehl, {H. T.} and M. Diesburg and Ding, {P. F.} and A. Dominguez and T. Dorland and A. Dubey and Dudko, {L. V.} and D. Duggan and A. Duperrin and S. Dutt and A. Dyshkant and M. Eads and D. Edmunds and J. Ellison and Elvira, {V. D.} and Y. Enari and H. Evans and A. Evdokimov and Evdokimov, {V. N.} and G. Facini and T. Ferbel and F. Fiedler and F. Filthaut and W. Fisher and Fisk, {H. E.} and M. Fortner and H. Fox and S. Fuess and A. Garcia-Bellido and Garc{\'i}a-Guerra, {G. A.} and V. Gavrilov and P. Gay and W. Geng and D. Gerbaudo and Gerber, {C. E.} and Y. Gershtein and G. Ginther and G. Golovanov and A. Goussiou and Grannis, {P. D.} and S. Greder and H. Greenlee and Greenwood, {Z. D.} and Gregores, {E. M.} and G. Grenier and Ph Gris and Grivaz, {J. F.} and A. Grohsjean and S. Gr{\"u}nendahl and Gr{\"u}newald, {M. W.} and T. Guillemin and G. Gutierrez and P. Gutierrez and A. Haas and S. Hagopian and J. Haley and L. Han and K. Harder and A. Harel and Hauptman, {J. M.} and J. Hays and T. Head and T. Hebbeker and D. Hedin and H. Hegab and Heinson, {A. P.} and U. Heintz and C. Hensel and {Heredia-De La Cruz}, I. and K. Herner and G. Hesketh and Hildreth, {M. D.} and R. Hirosky and T. Hoang and Hobbs, {J. D.} and B. Hoeneisen and M. Hohlfeld and Z. Hubacek and V. Hynek and I. Iashvili and Y. Ilchenko and R. Illingworth and Ito, {A. S.} and S. Jabeen and M. Jaffr{\'e} and D. Jamin and A. Jayasinghe and R. Jesik and K. Johns and M. Johnson and A. Jonckheere and P. Jonsson and J. Joshi and Jung, {A. W.} and A. Juste and K. Kaadze and E. Kajfasz and D. Karmanov and Kasper, {P. A.} and I. Katsanos and R. Kehoe and S. Kermiche and N. Khalatyan and A. Khanov and A. Kharchilava and Kharzheev, {Y. N.} and Kohli, {J. M.} and Kozelov, {A. V.} and J. Kraus and S. Kulikov and A. Kumar and A. Kupco and T. Kurča and Kuzmin, {V. A.} and J. Kvita and S. Lammers and G. Landsberg and P. Lebrun and Lee, {H. S.} and Lee, {S. W.} and Lee, {W. M.} and J. Lellouch and L. Li and Li, {Q. Z.} and Lietti, {S. M.} and Lim, {J. K.} and D. Lincoln and J. Linnemann and Lipaev, {V. V.} and R. Lipton and Y. Liu and A. Lobodenko and M. Lokajicek and {Lopes De Sa}, R. and Lubatti, {H. J.} and R. Luna-Garcia and Lyon, {A. L.} and MacIel, {A. K A} and D. MacKin and R. Madar and R. Maga{\~n}a-Villalba and S. Malik and Malyshev, {V. L.} and Y. Maravin and J. Mart{\'i}nez-Ortega and R. McCarthy and McGivern, {C. L.} and Meijer, {M. M.} and A. Melnitchouk and D. Menezes and Mercadante, {P. G.} and M. Merkin and A. Meyer and J. Meyer and F. Miconi and Mondal, {N. K.} and Muanza, {G. S.} and M. Mulhearn and E. Nagy and M. Naimuddin and M. Narain and R. Nayyar and Neal, {H. A.} and Negret, {J. P.} and P. Neustroev and Novaes, {S. F.} and T. Nunnemann and G. Obrant and J. Orduna and N. Osman and J. Osta and {Otero Y Garz{\'o}n}, {G. J.} and M. Padilla and A. Pal and N. Parashar and V. Parihar and Park, {Sung Keun} and R. Partridge and N. Parua and A. Patwa and B. Penning and M. Perfilov and Y. Peters and K. Petridis and G. Petrillo and P. P{\'e}troff and R. Piegaia and Pleier, {M. A.} and Podesta-Lerma, {P. L M} and Podstavkov, {V. M.} and P. Polozov and Popov, {A. V.} and M. Prewitt and D. Price and N. Prokopenko and J. Qian and A. Quadt and B. Quinn and Rangel, {M. S.} and K. Ranjan and Ratoff, {P. N.} and I. Razumov and P. Renkel and M. Rijssenbeek and I. Ripp-Baudot and F. Rizatdinova and M. Rominsky and A. Ross and C. Royon and P. Rubinov and R. Ruchti and G. Safronov and G. Sajot and P. Salcido and A. S{\'a}nchez-Hern{\'a}ndez and Sanders, {M. P.} and B. Sanghi and Santos, {A. S.} and G. Savage and L. Sawyer and T. Scanlon and Schamberger, {R. D.} and Y. Scheglov and H. Schellman and T. Schliephake and S. Schlobohm and C. Schwanenberger and R. Schwienhorst and J. Sekaric and H. Severini and E. Shabalina and V. Shary and Shchukin, {A. A.} and Shivpuri, {R. K.} and V. Simak and V. Sirotenko and P. Skubic and P. Slattery and D. Smirnov and Smith, {K. J.} and Snow, {G. R.} and J. Snow and S. Snyder and S. S{\"o}ldner-Rembold and L. Sonnenschein and K. Soustruznik and J. Stark and V. Stolin and Stoyanova, {D. A.} and M. Strauss and D. Strom and L. Stutte and L. Suter and P. Svoisky and M. Takahashi and A. Tanasijczuk and M. Titov and Tokmenin, {V. V.} and Tsai, {Y. T.} and K. Tschann-Grimm and D. Tsybychev and B. Tuchming and C. Tully and L. Uvarov and S. Uvarov and S. Uzunyan and {Van Kooten}, R. and {Van Leeuwen}, {W. M.} and N. Varelas and Varnes, {E. W.} and Vasilyev, {I. A.} and P. Verdier and Vertogradov, {L. S.} and M. Verzocchi and M. Vesterinen and D. Vilanova and P. Vokac and Wahl, {H. D.} and Wang, {M. H L S} and J. Warchol and G. Watts and M. Wayne and M. Weber and L. Welty-Rieger and A. White and D. Wicke and Williams, {M. R J} and Wilson, {G. W.} and M. Wobisch and Wood, {D. R.} and Wyatt, {T. R.} and Y. Xie and R. Yamada and Yang, {W. C.} and T. Yasuda and Yatsunenko, {Y. A.} and Z. Ye and H. Yin and K. Yip and Youn, {S. W.} and J. Yu and T. Zhao and B. Zhou and J. Zhu and M. Zielinski and D. Zieminska and L. Zivkovic",
year = "2012",
month = "1",
day = "19",
doi = "10.1103/PhysRevLett.108.032004",
language = "English",
volume = "108",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "3",

}

TY - JOUR

T1 - Evidence for Spin correlation in tt̄ production

AU - Abazov, V. M.

AU - Abbott, B.

AU - Acharya, B. S.

AU - Adams, M.

AU - Adams, T.

AU - Alexeev, G. D.

AU - Alkhazov, G.

AU - Alton, A.

AU - Alverson, G.

AU - Alves, G. A.

AU - Aoki, M.

AU - Askew, A.

AU - Åsman, B.

AU - Atkins, S.

AU - Atramentov, O.

AU - Augsten, K.

AU - Avila, C.

AU - Backusmayes, J.

AU - Badaud, F.

AU - Bagby, L.

AU - Baldin, B.

AU - Bandurin, D. V.

AU - Banerjee, S.

AU - Barberis, E.

AU - Baringer, P.

AU - Barreto, J.

AU - Bartlett, J. F.

AU - Bassler, U.

AU - Bazterra, V.

AU - Bean, A.

AU - Begalli, M.

AU - Belanger-Champagne, C.

AU - Bellantoni, L.

AU - Beri, S. B.

AU - Bernardi, G.

AU - Bernhard, R.

AU - Bertram, I.

AU - Besançon, M.

AU - Beuselinck, R.

AU - Bezzubov, V. A.

AU - Bhat, P. C.

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 - Bose, T.

AU - Brandt, A.

AU - Brandt, O.

AU - Brock, R.

AU - Brooijmans, G.

AU - Bross, A.

AU - Brown, D.

AU - Brown, J.

AU - Bu, X. B.

AU - Buehler, M.

AU - Buescher, V.

AU - Bunichev, V.

AU - Burdin, S.

AU - Burnett, T. H.

AU - Buszello, C. P.

AU - Calpas, B.

AU - Camacho-Pérez, E.

AU - Carrasco-Lizarraga, M. A.

AU - Casey, B. C K

AU - Castilla-Valdez, H.

AU - Chakrabarti, S.

AU - Chakraborty, D.

AU - Chan, K. M.

AU - Chandra, A.

AU - Chapon, E.

AU - Chen, G.

AU - Chevalier-Théry, S.

AU - Cho, D. K.

AU - Cho, S. W.

AU - Choi, Suyong

AU - Choudhary, B.

AU - Cihangir, S.

AU - Claes, D.

AU - Clutter, J.

AU - Cooke, M.

AU - Cooper, W. E.

AU - Corcoran, M.

AU - Couderc, F.

AU - Cousinou, M. C.

AU - Croc, A.

AU - Cutts, D.

AU - Das, A.

AU - Davies, G.

AU - De, K.

AU - De Jong, S. J.

AU - De La Cruz-Burelo, E.

AU - Déliot, F.

AU - Demina, R.

AU - Denisov, D.

AU - Denisov, S. P.

AU - Desai, S.

AU - Deterre, C.

AU - Devaughan, K.

AU - Diehl, H. T.

AU - Diesburg, M.

AU - Ding, P. F.

AU - Dominguez, A.

AU - Dorland, T.

AU - Dubey, A.

AU - Dudko, L. V.

AU - Duggan, D.

AU - Duperrin, A.

AU - Dutt, S.

AU - Dyshkant, A.

AU - Eads, M.

AU - Edmunds, D.

AU - Ellison, J.

AU - Elvira, V. D.

AU - Enari, Y.

AU - Evans, H.

AU - Evdokimov, A.

AU - Evdokimov, V. N.

AU - Facini, G.

AU - Ferbel, T.

AU - Fiedler, F.

AU - Filthaut, F.

AU - Fisher, W.

AU - Fisk, H. E.

AU - Fortner, M.

AU - Fox, H.

AU - Fuess, S.

AU - Garcia-Bellido, A.

AU - García-Guerra, G. A.

AU - Gavrilov, V.

AU - Gay, P.

AU - Geng, W.

AU - Gerbaudo, D.

AU - Gerber, C. E.

AU - Gershtein, Y.

AU - Ginther, G.

AU - Golovanov, G.

AU - Goussiou, A.

AU - Grannis, P. D.

AU - Greder, S.

AU - Greenlee, H.

AU - Greenwood, Z. D.

AU - Gregores, E. M.

AU - Grenier, G.

AU - Gris, Ph

AU - Grivaz, J. F.

AU - Grohsjean, A.

AU - Grünendahl, S.

AU - Grünewald, M. W.

AU - Guillemin, T.

AU - Gutierrez, G.

AU - Gutierrez, P.

AU - Haas, A.

AU - Hagopian, S.

AU - Haley, J.

AU - Han, L.

AU - Harder, K.

AU - Harel, A.

AU - Hauptman, J. M.

AU - Hays, J.

AU - Head, T.

AU - Hebbeker, T.

AU - Hedin, D.

AU - Hegab, H.

AU - Heinson, A. P.

AU - Heintz, U.

AU - Hensel, C.

AU - Heredia-De La Cruz, I.

AU - Herner, K.

AU - Hesketh, G.

AU - Hildreth, M. D.

AU - Hirosky, R.

AU - Hoang, T.

AU - Hobbs, J. D.

AU - Hoeneisen, B.

AU - Hohlfeld, M.

AU - Hubacek, Z.

AU - Hynek, V.

AU - Iashvili, I.

AU - Ilchenko, Y.

AU - Illingworth, R.

AU - Ito, A. S.

AU - Jabeen, S.

AU - Jaffré, M.

AU - Jamin, D.

AU - Jayasinghe, A.

AU - Jesik, R.

AU - Johns, K.

AU - Johnson, M.

AU - Jonckheere, A.

AU - Jonsson, P.

AU - Joshi, J.

AU - Jung, A. W.

AU - Juste, A.

AU - Kaadze, K.

AU - Kajfasz, E.

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PY - 2012/1/19

Y1 - 2012/1/19

N2 - We present a measurement of the ratio of events with correlated t and t̄ spins to the total number of tt̄ events. This ratio f is evaluated using a matrix-element-based approach in 729 tt̄ candidate events with a single lepton (electron or muon) and at least four jets. The analyzed pp̄ collisions data correspond to an integrated luminosity of 5.3fb -1 and were collected with the D0 detector at the Fermilab Tevatron collider operating at a center-of-mass energy √s=1.96TeV. Combining this result with a recent measurement of f in dileptonic final states, we find f in agreement with the standard model. In addition, the combination provides evidence for the presence of spin correlation in tt̄ events with a significance of more than 3 standard deviations.

AB - We present a measurement of the ratio of events with correlated t and t̄ spins to the total number of tt̄ events. This ratio f is evaluated using a matrix-element-based approach in 729 tt̄ candidate events with a single lepton (electron or muon) and at least four jets. The analyzed pp̄ collisions data correspond to an integrated luminosity of 5.3fb -1 and were collected with the D0 detector at the Fermilab Tevatron collider operating at a center-of-mass energy √s=1.96TeV. Combining this result with a recent measurement of f in dileptonic final states, we find f in agreement with the standard model. In addition, the combination provides evidence for the presence of spin correlation in tt̄ events with a significance of more than 3 standard deviations.

UR - http://www.scopus.com/inward/record.url?scp=84862871887&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84862871887&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.108.032004

DO - 10.1103/PhysRevLett.108.032004

M3 - Article

C2 - 22400731

AN - SCOPUS:84862871887

VL - 108

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 3

M1 - 032004

ER -