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Measurement of spin correlation between top and antitop quarks produced in $p\bar{p}$ collisions at $\sqrt{s} = 1.96$ TeV
Authors :
D0 Collaboration Abazov, Victor Mukhamedovich Askew, Andrew Warren Ellison, John A. Elvira, V. Daniel Enari, Yuji Evans, Harold G. Evdokimov, Anatoly V. Evdokimov, Valeri N. Faure, Alexandre Feng, Lei Ferbel, Thomas Fiedler, Frank Atkins, Scott Filthaut, Frank Fisher, Wade Cameron Fisk, H. Eugene Fortner, Michael R. Fox, Harald Franc, Jiri Fuess, Stuart C. Garbincius, Peter H. Garcia-Bellido, Aran Garcia-González, J. A. Augsten, Kamil Gavrilov, Vladimir B. Geng, Weigang Gerber, Cecilia Elena Gershtein, Yuri S. Ginther, George E. Gogota, Olga Golovanov, Georgy Anatolievich Grannis, Paul D. Greder, Sebastien Greenlee, Herbert B. Aushev, Volodymyr Grenier, Gerald Jean Gris, Phillipe Luc Grivaz, Jean-Francois Grohsjean, Alexander Gruenendahl, Stefan Gruenewald, Martin Werner Guillemin, Thibault Gutierrez, Gaston R. Gutierrez, Phillip Haley, Joseph Glenn Biddle Aushev, Yegor Han, Liang Harder, Kristian Harel, Amnon Hauptman, John Michael Hays, Jonathan M. Head, Tim Hebbeker, Thomas Hedin, David R. Hegab, Hatim Heinson, Ann Avila, Carlos A. Heintz, Ulrich Hensel, Carsten Heredia-de La Cruz, Ivan Herner, Kenneth Richard Hesketh, Gavin G. Hildreth, Michael D. Hirosky, Robert James Hoang, Trang Hobbs, John D. Hoeneisen, Bruce Badaud, Frederique Hogan, Julie Hohlfeld, Mark Holzbauer, Jenny Lyn Howley, Ian James Hubacek, Zdenek Hynek, Vlastislav Iashvili, Ia Ilchenko, Yuriy Illingworth, Robert A. Ito, Albert S. Bagby, Linda F. Jabeen, Shabnam Jaffre, Michel J. Jayasinghe, Ayesh Jeong, Min-Soo Jesik, Richard L. Jiang, Peng Johns, Kenneth Arthur Johnson, Emily Johnson, Marvin E. Jonckheere, Alan M. Baldin, Boris Jonsson, Per Martin Joshi, Jyoti Jung, Andreas Werner Juste, Aurelio Kajfasz, Eric Karacheban, Olena Karmanov, Dmitriy Y. Katsanos, Ioannis Kaur, Manbir Kehoe, Robert Leo Patrick Bandurin, Dmitry V. Kermiche, Smain Khalatyan, Norayr Khanov, Alexander Kharchilava, Avto Kharzheev, Yuri N. Kiselevich, Ivan Lvovich Kohli, Jatinder M. Kozelov, Alexander V. Kraus, James Alexander Kumar, Ashish Abbott, Braden Keim Banerjee, Sunanda Kupco, Alexander Kurca, Tibor Kuzmin, Valentin Alexandrovich Lammers, Sabine Wedam Lebrun, Patrice Lee, Hyeon-Seung Lee, Seh-Wook Lee, William M. Lei, Xiaowen Lellouch, Jeremie Barberis, Emanuela Li, Dikai Li, Hengne Li, Liang Li, Qi-Zhong Lim, Jeong Ku Lincoln, Donald W. Linnemann, James Thomas Lipaev, Vladimir V. Lipton, Ronald J. Liu, Huanzhao Baringer, Philip S. Liu, Yanwen Lobodenko, Alexandre Lokajicek, Milos Lopes De Sá, Rafael Luna-Garcia, R. Lyon, Adam Leonard Maciel, Arthur K. A. Madar, Romain Magana-Villalba, R. Malik, Sudhir Bartlett, J. Frederick Malyshev, Vladimir L. Mansour, Jason Martínez-Ortega, J. McCarthy, Robert L. Mcgivern, Carrie Lynne Meijer, Melvin M. Melnitchouk, Alexander S. Menezes, Diego D. Mercadante, Pedro Galli Merkin, Mikhail M. Bassler, Ursula Rita Meyer, Arnd Meyer, Jorg Manfred Miconi, Florian Mondal, Naba K. Mulhearn, Michael James Nagy, Elemer Narain, Meenakshi Nayyar, Ruchika Neal, Homer A. Negret, Juan Pablo Bazterra, Victor Neustroev, Petr V. Nguyen, Huong Thi Nunnemann, Thomas P. Hernandez Orduna, Jose de Jesus Osman, Nicolas Ahmed Osta, Jyotsna Pal, Arnab Parashar, Neeti Parihar, Vivek Park, Sung Keun Bean, Alice L. Partridge, Richard A. Parua, Nirmalya Patwa, Abid Penning, Bjoern Perfilov, Maxim Anatolyevich Peters, Reinhild Yvonne Fatima Petridis, Konstantinos Petrillo, Gianluca Petroff, Pierre Pleier, Marc-Andre Begalli, Marcia Podstavkov, Vladimir M. Popov, Alexey V. Prewitt, Michelle Price, Darren Prokopenko, Nikolay N. Qian, Jianming Quadt, Arnulf Quinn, Gene Breese Ratoff, Peter N. Razumov, Ivan A. Bellantoni, Leo Ripp-Baudot, I. Rizatdinova, Flera Rominsky, Mandy Kathleen Ross, Anthony Royon, Christophe Rubinov, Paul Michael Ruchti, Randal C. Sajot, Gerard Sanchez-Hernandez, A. Sanders, Michiel P. Beri, Suman B. Santos, Angelo Souza Savage, David G. Savitskyi, Mykola Sawyer, H. Lee Scanlon, Timothy P. Schamberger, R. Dean Scheglov, Yury A. Schellman, Heidi M. Schott, Matthias Schwanenberger, Christian Acharya, Bannanje Sripath Bernardi, Gregorio Schwienhorst, Reinhard H. Sekaric, Jadranka Severini, Horst Shabalina, Elizaveta K. Shary, Viacheslav V. Shaw, Savanna Shchukin, Andrey A. Simak, Vladislav J. Skubic, Patrick Louis Slattery, Paul F. Bernhard, Ralf Patrick Smirnov, Dmitri V. Snow, Gregory R. Snow, Joel Mark Snyder, Scott Stuart Söldner-Rembold, S. Sonnenschein, Lars Soustruznik, Karel Stark, Jan Stefaniuk, Nazar Stoyanova, Dina A. Bertram, Iain A. Strauss, Michael G. Suter, Louise Svoisky, Peter V. Titov, Maxim Tokmenin, Valeriy V. Tsai, Yun-Tse Tsybychev, Dmitri Tuchming, Boris Tully, Christopher George T. Uvarov, Lev Besancon, Marc Uvarov, Sergey L. Uzunyan, Sergey A. Van Kooten, R. J. van Leeuwen, Willem M. Varelas, Nikos Varnes, Erich W. Vasilyev, Igor A. Verkheev, Alexander Yurievich Vertogradov, Leonid S. Verzocchi, Marco Beuselinck, Raymond Vesterinen, Mika Vilanova, Didier Vokac, Petr Wahl, Horst D. Wang, Michael H. L. S. Warchol, Jadwiga Watts, Gordon Thomas Wayne, Mitchell R. Weichert, Jonas Welty-Rieger, Leah Christine Bhat, Pushpalatha C. Williams, Mark Richard James Wilson, Graham Wallace Wobisch, Markus Wood, Darien Robert Wyatt, Terence R. Xie, Yunhe Yamada, Ryuji Yang, Siqi Yasuda, Takahiro Yatsunenko, Yuriy A. Bhatia, Sudeep Ye, Wanyu Ye, Zhenyu Yin, Hang Yip, Kin Youn, Sungwoo Yu, Jiaming Zennamo, Joseph Zhao, Tianqi Gilbert Zhou, Bing Zhu, Junjie Bhatnagar, Vipin Zielinski, Marek Zieminska, Daria Zivkovic, Lidija Blazey, Gerald Charles Blessing, Susan K. Adams, Mark Raymond Bloom, Kenneth A. Boehnlein, Amber S. Boline, Daniel Dooley Boos, Edward E. Borissov, Guennadi Borysova, Maryna Brandt, Andrew Brandt, Oleg Brock, Raymond L. Bross, Alan D. Adams, Todd Brown, Duncan Paul Bu, Xue-Bing Buehler, Marc Buescher, Volker Bunichev, Viacheslav Yevgenyevich Burdin, Sergey Buszello, Claus Peter Camacho-Pérez, E. Casey, Brendan Cameron Kieran Castilla-Valdez, Heriberto Agnew, James P. Caughron, Seth Aaron Chakrabarti, Subhendu Chan, Kwok Ming Leo Chandra, Avdhesh Chapon, Emilien Chen, Guo Cho, Sung-Woong Choi, Suyong Choudhary, Brajesh C. Cihangir, Selcuk Alexeev, Guennadi D. Claes, Daniel R. Clutter, Justace Randall Cooke, Michael P. Cooper, William Edward Corcoran, Marjorie D. Couderc, Fabrice Cousinou, Marie-Claude Cuth, Jakub Cutts, David Das, Amitabha Alkhazov, Georgiy D. Davies, Gavin John de Jong, Sijbrand J. De La Cruz-Burelo, Eduard Deliot, Frederic Demina, Regina Denisov, Dmitri S. Denisov, Sergei P. Desai, Satish Vijay Deterre, Cecile DeVaughan, Kayle Otis Alton, Andrew K. Diehl, H. Thomas Diesburg, Michael Ding, Pengfei Dominguez, D. Aaron M. Dubey, Abhinav Kumar Dudko, Lev V. Duperrin, Arnaud Dutt, Suneel Eads, Michael T. Edmunds, Daniel L. Laboratoire de Physique Subatomique et de Cosmologie (LPSC) Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Centre National de la Recherche Scientifique (CNRS) Institut Pluridisciplinaire Hubert Curien (IPHC) Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Institut de Physique Nucléaire de Lyon (IPNL) Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3) Centre de Physique des Particules de Marseille (CPPM) Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de l'Accélérateur Linéaire (LAL) Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11) D0 Collaboration Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]) Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Source :
Physics Letters B, Physics Letters B, Elsevier, 2016, 757, pp.199-206. ⟨10.1016/j.physletb.2016.03.053⟩, Physics letters / B B757, 199-206 (2016). doi:10.1016/j.physletb.2016.03.053, Physics Letters B, 2016, 757, pp.199-206. ⟨10.1016/j.physletb.2016.03.053⟩
Publication Year :
2016
Publisher :
HAL CCSD, 2016.
Abstract
We present a measurement of the correlation between the spins of t and tbar 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, $O_{off} = 0.89 \pm 0.22$ (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.<br />Published version
Details
Language :
English
ISSN :
03702693
Database :
OpenAIRE
Journal :
Physics Letters B, Physics Letters B, Elsevier, 2016, 757, pp.199-206. ⟨10.1016/j.physletb.2016.03.053⟩, Physics letters / B B757, 199-206 (2016). doi:10.1016/j.physletb.2016.03.053, Physics Letters B, 2016, 757, pp.199-206. ⟨10.1016/j.physletb.2016.03.053⟩
Accession number :
edsair.doi.dedup.....333aff39d2ba98bd6be7a789ba7523a2
Full Text :
https://doi.org/10.1016/j.physletb.2016.03.053⟩