Dependence of the tt production cross section on the transverse momentum of the top quark
VM M. Abazov,Brad K. Abbott,Maris A. Abolins,Bobby Samir Acharya,M. R. Adams,Todd Adams,Ernest Aguiló, G. D. Alexeev,G. D. Alkhazov,Anrew Alton,George O. Alverson,Gelio A. Alves, L. S. Ancu,Masahiko Aoki,Y. Arnoud,Mikhail Arov, A. Askew,B. Å Åsman, O. V. Atramentov,C. Ávila,J. BackusMayes,Frédérique Badaud,L. Bagby,Boris Yu Baldin,Dmitry V. Bandurin,Sw W. Banerjee,Emanuela Barbëris,Anne Fleur Barfuss,Philip S. Baringer,J. L. Barreto,J. F. Bartlett,Ursula Bassler,Daniela A. Bauer,S. Beale,Alice Bean,Márcia Begalli,Michael Begel,Camille Bèlanger-Champagne,Leo Bellantoni,Jorge A. Benitez,Suman B. Beri,Gregorio Bernardi,Ralf P. Bernhard,Iain A. Bertram,Marc Besançon,R. Beuselinck,V. A. Bezzubov,Priya C. Bhat,V. Bhatnagar,Gerald C. Blazey,Susan K. Blessing,Kenneth Bloom,Amber Boehnlein,Daniel Boline,Tim A. Bolton,Ernst E. Boos,Guennadi Borissov,Tulika Bose,Achi E. Brandt,Raymond J. Brock,Gustaaf Brooijmans,Alan D. Bross,David N. Brown,X. B. Bu,Donald Bruce Buchholz,Marc Buehler,V. Buescher,Viacheslav E. Bunichev, Sebastien Burdin,TH Burnett,Claus P. Buszello,Philippe Calfayan,B. Calpas, S. Calvet,Enrique Camacho-Pérez,Jochen Cammin,M. A. Carrasco-Lizarraga,Edgar Carrera Jarrin,Brendan C K Casey,H. Castilla-Valdez,Subhendu K. Chakrabarti,Dhiman Chakraborty,Kai M A Chan,Avdhesh Chandra,Elliott Cheu,S. Chevalier-Théry,D. K. Cho,S. W. Cho,Sungho Choi,Brajesh Chandra Choudhary,T. Christoudias,Selçuk Cihangir,Dan R. Claes,J. Clutter,Michael Cooke,W. E. Cooper,Marjorie D. Corcoran,F. Couderc,M. C. Cousinou,David Ćutts,Mikołaj Ćwiok,Aron C. Das,Gavin J. Davies,Kaushik De,Sijbrand J. De Jong,Eduard De La De La Cruz-Burelo,Kayle DeVaughan,Frédéric Déliot,Marcel Demarteau,Regina F. Démina,D. S. Denisov,Sergey P. Denisov,Satish V. Desai,H. Thomas Diehl, M. Diesburg,Aaron Domínguez, T. Dorland,Anand Kumar Dubey, L. V. Dudko, L. Duflot,Daniel Duggan,Arnaud Duperrin,S. Dutt,Alexander S. Dyshkant,Michael Eads,Daniel L. Edmunds,John A. Ellison,V. Daniel Elvira,Yuji Enari,Sarah C. Eno,Harold G. Evans,A. V. Evdokimov,V. N. Evdokimov,Gabriel J. Facini,A. V. Ferapontov, T. Ferbel,Frank Fiedler,Frank Filthaut,Wade C. Fisher,H. Eugene Fisk, Michael R. Fortner,Howard S. Fox,Stuart Fuess,Thomas Gadfort,Cristina F. Galea, Arán García-Bellido,V. B. Gavrilov,Pascal Gay,Walter M. Geist,Weihua Geng, D. Gerbaudo,Cecilia E. Gerber,Yu S. Gershtein,Dag Gillberg,G. Ginther,Georgy A. Golovanov,B. Gómez,A. G. Goussiou,Paul D. Grannis,S. Greder,Herbert B. Greenlee,Zeno Dixon Greenwood,E. De Moraes Gregores,Gérald J. Grenier,Ph L Y Gris,Jean François Grivaz,Alexander Grohsjean,Stefan Grünendahl,Martin W. Grünewald,Fanglu Guo,Jia Guo,Gaston Gutiérrez,Phillip Gutierrez,Andrew Haas,Petra Haefner,Stephanie L. Hagopian,Joy E. Haley,I. Hall,Liang Han,Kristian U. Harder,Amnon Harel,John M. Hauptman,Jonathan Hays,Thomas Hebbeker,David Hedin, Jeroen G. Hegeman,Ann P. Heinson,Ulrich Heintz,Carsten Hensel,I. Heredia De La Heredia De La Cruz,Ken R. Herner,G. G. Hesketh,Mike D. Hildreth,Robert J. Hirosky,T. Hoang,John D. Hobbs,B. Hoeneisen,Marc Hohlfeld,Sabbir Hossain,P. Houben,Yuan Hu,Zdenek Hubacek,N. K. Huske, V. Hynek, I. Iashvili,Robert Illingworth,A. S. Ito,Shabnam Jabeen,Marc Olivier Jaffré,Supriya Jain,D. O. Jamin,Rick Jesik,Ken A. Johns,C. L. Johnson,Marvin E. Johnson,David T. Johnston,A. M. Jonckheere,Per M. Jönsson,Aurelio Juste,Eric Kajfasz,D. E. Karmanov,Peter A. Kasper,I. Katsanos,Venkat Kaushik,Robert L. Kehoe,S. Kermiche,Norik S. Khalatyan,Alexandre I. Khanov,Avto I. Kharchilava,Yu N. Kharzheev,D. Khatidze,Michael H. Kirby,Matthias Kirsch, J. M. Kohli,A. V. Kozelov,James A. Kraus,Arun K Rhine Kumar,Alexander Kupčo,Tibor Kurča,Vadim A. Kuzmin,Jiří Kvita,D. Lam, S. Lammers,Greg L. Landsberg,Paul L G Lebrun,H. S. Lee,William Lee,Alexander K. Leflat,J. Lellouch, Lei Li,Qizhong Li, S. M. Lietti,J. K. Lim,Don W. Lincoln,James T. Linnemann,V. V. Lipaev,Ronald J. Lipton,Yong Liü,Zhen Liu,A. A. Lobodenko,Miloš V. Lokajíček, Peter A. Love, H. J. Lubatti,René Luna Luna-García,Adam L. Lyon,Arthur K A MacIel,Dennis Mackin,Peter Mättig,R. Magaña Villalba,Prolay Kumar Mal,Sudhir K R Malik, V. L. Malyshev,Yurii Y. Maravin,J. Martínez-Ortega,Robert L. McCarthy,C. L. McGivern,M. M. Meijer,Alex Melnitchouk,L. Mendoza,Débora Peres Menezes,Pedro G. Mercadante,M. M. Merkin,Arnd B. Meyer,Jörg P. Meyer,Naba Kumar Mondal,Tania K. Moulik,G. S. Muanza,M. J. Mulhearn,O. Mundal,Luiz M. Mundim,Elemér Nagy,Md D. Naimuddin,Meenakshi Narain,Ruchika Nayyar,Homer A. Neal,J. P. Negret,P. Neustroev,Halvor Møll Nilsen,Helio Nogima,S. F. Novaes,Thomas Nunnemann,G. Z. Obrant,Dmitry Onoprienko,Jesus Orduna,N. Osman,J. Osta,R. Otec,G. J O Otero Y Garzón,Mark Owen,M. Padilla,Paul Padley,Monica Pangilinan,Neeti D. Parashar,Vivek Parihar,Sujung Park,Sungkeun Park,John A. Parsons,Richard A. Partridge,Nirmalya Parua,Amit N. Patwa,B. Penning,M. A. Perfilov,Klaus J. Peters,Yvonne Peters,Pierre Pétroff, R. Piegaia,J. Piper,Marc André Pleier,P. Podesta M Podesta Podesta-Lerma,Vladimir M. Podstavkov,M. E. Pol,P. A. Polozov,A. V. Popov,M. Prewitt,Darren D. Price,Serban D. Protopopescu,Jun Qian,Arnulf Quadt,Breese Quinn, Murilo S. Rangel,Kirti Ranjan,Peter N. Ratoff,I. Razumov,Peter Renkel,Philip Rich,Michael Rijssenbeek,Isabelle Ripp-Baudot, F. K. Rizatdinova,Steve Robinson,Mandy Rominsky,Christophe R. Royon, P. Rubinov,Randal C. Ruchti,Gennady A. Safronov,Ǵerard Sajot,Alberto Sánchez-Hernández,Marijn P A Sanders,B. Sanghi,G. Paul Savage,Lee Sawyer,Tim Scanlon,Dorothee Schaile,R. Dean Schamberger,Yu A. Scheglov,Heidi M. Schellman,Thorsten Schliephake,S. Schlobohm,Christian Schwanenberger,Reinhard Schwienhorst,Jadranka Sekaric,Horst Severini,Elizaveta K. Shabalina,Viatcheslav V. Shary,Andrey A. Shchukin,Rajiv K. Shivpuri,Vladislav Šimák,Vladimir I. Sirotenko,Patrick L. Skubic,P. F. Slattery,Dmitry V. Smirnov,Gregory R. Snow,James M. Snow,Scott S. Snyder,Stefan A. Söldner-Rembold,Lars Sonnenschein,André Sopczak,Mark Sosebee,Karel Soustružník, B. Spurlock,Jan Stark,V. L. Stolin,Dina A. Stoyanova,Jonas Strandberg,Michael A. Strang,E. Strauss,M. G. Strauss,Raimund Ströhmer,David M. Strom,Linda Stutte,Peter Svoisky,M. Takahashi,Andrs Jorge Tanasijczuk,Wendy M. Taylor,B. Tiller,Maxim Titov,V. V. Tokmenin,Dmitri Tsybychev,Boris Tuchming,Christopher G. Tully,P. Michael Tuts,R. Unalan,L. N. Uvarov,S. Uvarov,S. A. Uzunyan,P. J. van den Berg,Richard J. Van Kooten,W. M. Van Leeuwen,Nikos Varelas,Erich W. Varnes,I. A. Vasilyev,Patrice Verdier,L. S. Vertogradov,Marco Verzocchi,Mika Vesterinen,D. Vilanova,P. Vint, P. Vokac,Heinrich D. Wahl,Michael Wang, J. Warchol,Gordon Watts,Mitchell R. Wayne,Gerald A. Weber,Marc S. Weber,Matthew J. Wetstein,Andrew P. White,Daniel Wicke, Mark R J Williams,Graham W. Wilson,Stephen J. Wimpenny,Markus Wobisch, D. R. Wood,T. R. Wyatt,Yangchun Xie,C. Xu,Sahal Yacoob,Ryuji Yamada,Wanching Yang,Takahiro Yasuda,Yu A. Yatsunenko,Zuxin Ye,Hao Yin,Kin Yip,Hwidong Yoo,S. W. Youn,Jaehoon Yu,Ch Zeitnitz,S. Zelitch,Tianchi Zhao,Bing Zhou,Jian Zhu,Marek Zieliński,Daria Ziemińska,Lidia Živković, V. Zutshi,E. G. Zverev
Physics Letters B（2010）
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摘要
We present a measurement of the differential cross section for tt¯ events produced in pp¯ collisions at s=1.96 TeV as a function of the transverse momentum (pT) of the top quark. The selected events contain a high-pT lepton (ℓ), a large imbalance in pT, four or more jets with at least one candidate for a b jet, and correspond to 1 fb−1 of integrated luminosity recorded with the D0 detector. Objects in the event are associated through a constrained kinematic fit to the tt¯→WbWb¯→ℓνbqq¯′b¯ process. Results from next and next-to-next-to-leading-order perturbative QCD calculations agree with the measured differential cross section. Comparisons are also provided to predictions from Monte Carlo event generators using QCD calculations at different levels of precision.
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关键词
Top quark,Differential cross sections,Perturbative QCD
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