Measurement of spin correlation in ttbar production using a matrix element approach

6533b7d6fe1ef96bd1267072

RESEARCH PRODUCT

Measurement of spin correlation in ttbar production using a matrix element approach

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

subject

Physics Top quark Particle physics Muon Luminosity (scattering theory)010308 nuclear & particles physics Bar (music)Physics::Instrumentation and Detectors High Energy Physics::Phenomenology Tevatron FOS: Physical sciences General Physics and Astronomy 01 natural sciences High Energy Physics - Experiment Standard Model Nuclear physics High Energy Physics - Experiment (hep-ex)0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]High Energy Physics::Experiment Fermilab 010306 general physics Spin-½

description

correlation, assuming that the spin of the top quark is either correlated with the spin of the anti-top quark as predicted by the standard model or is uncorrelated. For the first time we use a matrix-element-based approach to study ttbar spin correlation. We use {ttbar -> W+bW-bbar ->l+nubl-nub} final states produced in ppbar collisions at a center of mass energy sqrt(s)=1.96 TeV, where l denotes an electron or a muon. The data correspond to an integrated luminosity of 5.4 fb-1 and were collected with the dzero detector at the Fermilab Tevatron collider. The result agrees with the standard model prediction. We exclude the hypothesis that the spins of the ttbar are uncorrelated at the 97.7% C.L.

year	journal	country	edition	language
2011-04-27

10.1103/physrevlett.107.032001 http://hal.in2p3.fr/in2p3-00589223