Measurement of spin correlation in tt¯ production using dilepton final states

6533b82bfe1ef96bd128d5cc

RESEARCH PRODUCT

Measurement of spin correlation in tt¯ production using dilepton final states

L. S. Vertogradov Daniel Duggan S. Desai Petr Vokac J. Orduna R. Bernhard W. E. Cooper Y. T. Tsai N. Prokopenko Sergey Burdin Graham Wilson M. Eads A. S. Santos L. S. Ancu B. Calpas S. P. Denisov A. Jonckheere J. Sekaric Michael A. Strauss A. Lobodenko Arnaud Duperrin Jong-sung Yu H. E. Fisk Markus Wobisch A. S. Ito A. Melnitchouk Chong-yu Xu Daria Zieminska Vipin Bhatnagar W. M. Lee S. Beale S. Beale Michael Mulhearn R. D. Schamberger T. R. Wyatt R. Partridge A. Dubey G. Grenier Robert Hirosky Aran Garcia-bellido V. V. Lipaev P. Lebrun Guennadi Borissov I. Heredia-de La Cruz Y. W. Liu Kenneth Bloom D. Brown V. L. Malyshev S. Kulikov R. Magaña-villalba S. W. Cho G. Obrant Gianluca Petrillo T. Scanlon Guo-ming Chen S. Kermiche Suman Bala Beri V. Hynek W. M. Van Leeuwen Ketino Kaadze D. Menezes S. Chevalier-théry G. D. Alexeev Flera Rizatdinova I. Ripp-baudot A. Meyer N. K. Mondal D. Boline H. T. Diehl T. A. Bolton R. Illingworth U. Bassler G. Gutierrez Gilvan Alves F. Badaud Neeti Parashar I. Razumov A. Boehnlein J. Ellison S. Fuess T. Kurca M. Jaffré Joseph Haley Shabnam Jabeen Zeno Dixon Greenwood B. C.k. Casey Todd Adams G. Savage Marc Weber T. Nunnemann B. Baldin M. Merkin Regina Demina Suneel Dutt P. Polozov M. Zielinski Jiping Zhu J. Hays Gavin Grant Hesketh J. Lellouch P. Verdier Wade Cameron Fisher Raymond Brock V. Simak Sabine Lammers R. Beuselinck Alexander Kupco V. V. Tokmenin G. Facini H. A. Neal D. Jamin Grigory Safronov S. Chakrabarti D. Smirnov A. Alton Meng Wang M. A. Carrasco-lizarraga V. A. Kuzmin P. Rubinov S. Uvarov I. Katsanos Marvin Johnson M. Pangilinan J. T. Linnemann A. L. Lyon Pushpalatha C Bhat K. Yip N. Parua D. Vilanova Randy Ruchti D. Edmunds W. Geist Mitchell Wayne A. Evdokimov H. Schellman J. M. Kohli J. Snow K. J. Smith K. Peters J. F. Bartlett J. M. Hauptman R. Nayyar Cecilia Elena Gerber A. V. Kozelov Robert Kehoe M. Arov Anthony Ross B. Quinn S. Cihangir G. Ginther G. Ginther Alexander Grohsjean Anna Goussiou L. Stutte B. Hoeneisen C. Schwanenberger A.s. Dyshkant Lee Sawyer Alice Bean Fabrice Couderc Zhenyu Ye Jiri Kvita D. Gerbaudo Stefan Grünendahl Thibault Guillemin Yuri Gershtein B. Sanghi Lev Uvarov Sung Keun Park Y. N. Kharzheev Jean-arcady Meyer T. Schliephake Jianming Qian Victor Daniel Elvira Andrew White Dmitri Tsybychev R. L. Mccarthy J. Joshi Gregory R Snow L. Zivkovic A. Das G. Otero Y Garzon P. Svoisky E. Camacho-pérez M. Demarteau L. Bagby Volker Buescher T. Gadfort B. Tuchming L. Welty-rieger P. Skubic Liang Li W. C. Yang S. Söldner-rembold Maxim Perfilov X. B. Bu K. Devaughan Reinhard Schwienhorst A. Jayasinghe Y. A. Yatsunenko Lev Dudko M. C. Cousinou K. M. Chan Philip Baringer G. S. Muanza Viatcheslav Stolin J. Piper S. Banerjee Pedro G Mercadante W. Geng W. Geng G. Alkhazov D. V. Bandurin Zdenek Hubacek J. Brown P. N. Ratoff Y. Peters D. Karmanov David T. Johnston M. Buehler Mark Richard James Williams P. M. Tuts Maksym Titov Arnulf Quadt N. Khalatyan S. Yacoob Maria Elena Pol L. Bellantoni Sudhir Malik Ia Iashvili Brajesh C Choudhary E. De La Cruz-burelo Konstantinos Petridis Sharon Hagopian Hang Yin Elemer Nagy Sergio F Novaes George Alverson V. E. Bazterra Carlos Avila P. D. Grannis Y. Enari A. K.a. Maciel Andrew Brandt E. E. Boos P. A. Kasper D. Wicke D. Hedin M. P. Sanders Dennis Stephen Mackin N. Osman Yurii Maravin Marc Besancon Vladimir Gavrilov Heriberto Castilla-valdez Gordon Watts Q. Z. Li V. Sirotenko Kirti Ranjan John Hobbs A. Juste Elizaveta Shabalina Suyong Choi Carsten Hensel V. A. Bezzubov J. Barreto J. P. Negret J. Clutter Phillip Gutierrez J. A. Parsons J. Osta R. Piegaia A. Sanchez-hernandez R. Luna-garcia Marco Verzocchi Theodoros Christoudias Michael Hildreth A. Patwa P. Neustroev F. Miconi Oleg Brandt Darren Price S. Uzunyan J. Martínez-ortega Andrew Askew Bjoern Penning C. Belanger-champagne Amnon Harel Marcia Begalli G. Golovanov Meenakshi Narain Harald Fox D. Khatidze V. M. Abazov V. Shary Zhanqiang Liu Zhanqiang Liu M. Cooke S. Greder Iain Alexander Bertram Michael Rijssenbeek S. Zelitch V. N. Evdokimov M. Rominsky N. Huske T. Dorland D. Denisov G. Bernardi Emanuela Barberis Hal Evans Thomas Ferbel M. Padilla M. Prewitt Lars Sonnenschein L. Suter Maiko Takahashi I. A. Vasilyev Ashok Kumar Tulika Bose Wendy Taylor Wendy Taylor V. Bunichev B. S. Acharya Christophe Royon H. D. Wahl M. M. Meijer T. Yasuda Aaron Dominguez R. Jesik M. Hohlfeld K. A. Johns O. Atramentov V. M. Podstavkov Kristian Harder D. K. Cho D. Cutts M. Fortner Greg Landsberg K. Herner A. Chandra A. Croc Ph Gris M. H. Kirby K. Soustruznik P. Vint G. C. Blazey A. V. Popov R. Yamada Gustaaf Brooijmans Jean-francois Grivaz Shih-chang Lee J. Warchol M. Naimuddin P. Jonsson S. J. De Jong A. Pal Thomas Hebbeker Mary Beth Adams A. A. Shchukin Frank Fiedler E. Kajfasz Nikos Varelas Bing Zhou R. K. Shivpuri D. R. Claes Gavin Davies G. Sajot R. Lopes De Sa S. M. Lietti Y. Scheglov Kaushik De M. S. Rangel Jan Stark Henry Lubatti Horst Severini J. Backusmayes Martin Grunewald Milos Lokajicek Hakjae Lee F. Guo Richard B. Lipton Darien Wood C. P. Buszello Yuehong Xie S. Blessing Scott Snyder R. Van Kooten M. D. Corcoran L. Han J. K. Lim B. ÅSman Tiefu Zhao A. P. Heinson S. W. Youn J. K. Kraus P. L.m. Podesta-lerma M. A. Pleier Brad Abbott Pierre Petroff H. Hegab V. Parihar P. Renkel Avto Kharchilava T. Hoang Alexander Khanov S. Schlobohm H. Greenlee D. M. Strom A. Bross Serban Protopopescu M. Aoki Andy Haas D. Chakraborty Don Lincoln Erich Varnes M. Vesterinen R. Madar Frederic Deliot Christopher George Tully Patrick Slattery T. H. Burnett Ulrich Heintz Frank Filthaut M. Diesburg A. Tanasijczuk P. Salcido D. A. Stoyanova C. L. Mcgivern Michael Begel Eduardo De Moraes Gregores T. Head

subject

Physics Quantum chromodynamics Quark Nuclear and High Energy Physics Particle physics Top quark Muon Physics::Instrumentation and Detectors 010308 nuclear & particles physics High Energy Physics::Phenomenology Tevatron 01 natural sciences Nuclear physics 0103 physical sciences High Energy Physics::Experiment Fermilab Center of mass 010306 general physics Lepton

description

We measure the correlation between the spin of the top quark and the spin of the anti-top quark in (ttbar -> W+ W- b bbar -> l+ nu b l- nubar bbar) final states produced in ppbar collisions at a center of mass energy sqrt(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 tbar 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.

year	journal	country	edition	language
2011-08-01	Physics Letters B

https://doi.org/10.1016/j.physletb.2011.05.077