Measurement of the ratio of three-jet to two-jet cross sections in collisions at

V M Abazov,B Abbott,B S Acharya,M Adams,T Adams,G D Alexeev,G Alkhazov,A Alton,A Askew,S Atkins,K Augsten,C Avila,F Badaud,L Bagby,B Baldin,D V Bandurin,S Banerjee,E Barberis,P Baringer,J F Bartlett,U Bassler,V E Bazterra,A Bean,M Begalli,L Bellantoni,S B Beri,G Bernardi,R Bernhard,I Bertram,M Besancon,R Beuselinck,P C Bhat,S Bhatia,V Bhatnagar,G Blazey,S Blessing,K Bloom,A Boehnlein,D Boline,E E Boos,G Borissov,A Brandt,O Brandt,R Brock,A Bross,D N Brown,J Brown,X B Bu,M Buehler,V Buescher,V Bunichev,S Burdin,C P Buszello,E Camachoperez,B C K Casey,H Castillavaldez,S Caughron,S Chakrabarti,D Chakraborty,K M Chan,A Chandra,E Chapon,Guoming Chen,S Chevalierthery,S W Cho,S 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,Anuk Das,Gareth C G Davies,S J De Jong,E De La Cruzburelo,F Deliot,R Demina,D Denisov,S P Denisov,S Desai,C Deterre,K Devaughan,H T Diehl,M Diesburg,P F Ding,A Dominguez,A K 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,Liuping Feng,T Ferbel,F Fiedler,F Filthaut,W Fisher,H E Fisk,M Fortner,Harald Fox,S Fuess,A Garciabellido,J A Garciagonzalez,G A Garciaguerra,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,G Grenier,Ph Gris,J F Grivaz,A Grohsjean,S Grunendahl,M W Grunewald,T Guillemin,G Gutierrez,P Gutierrez, Jane E Haley,L Han,K Harder,A Harel,J M Hauptman,J Hays,T Head,T Hebbeker,D Hedin,Hatim Hegab,A P Heinson,U Heintz,C Hensel,I Herediade La Cruz,K Herner,G Hesketh,M D Hildreth,R Hirosky,T Hoang,J D Hobbs,B Hoeneisen,John A Hogan,M Hohlfeld,I Howley,Z Hubacek,V Hynek,I Iashvili,Y Ilchenko,R Illingworth,A S Ito,S Jabeen,M Jaffre,A Jayasinghe,M S Jeong,R Jesik,Ping Jiang,K Johns,E R Johnson,M Johnson,A Jonckheere,P Jonsson,J B Joshi,A W Jung,A Juste,E Kajfasz,D Karmanov,P A Kasper,I Katsanos,R Kehoe,S Kermiche,N Khalatyan,A Khanov,A Kharchilava,Y N Kharzheev,I Kiselevich,J M Kohli,A V Kozelov,J Kraus, Amod Kumar,A Kupco,T Kurca,V A Kuzmin,S Lammers,G Landsberg,P Lebrun,Hye Suk Lee,S W Lee,W M Lee,Xiaowen Lei,Jeremie Lellouch,D Li,Heping Li,Lin Li,Q Z Li,Jae Kyu Lim,D Lincoln,J Linnemann,V V Lipaev,R Lipton,He Liu, Yuncai Liu,A Lobodenko,M Lokajicek,R Lopes De Sa,H J Lubatti,R Lunagarcia,A L Lyon,A K A Maciel,R Madar,R Maganavillalba,Sudhir Malik,V L Malyshev,Y Maravin,J Martinezortega,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,M Mulhearn,E Nagy,M Naimuddin,M Narain,R Nayyar,H A Neal,J P Negret,P Neustroev,Hiep T Nguyen,T Nunnemann,J Orduna,N Osman,J Osta,M Padilla,A Pal,N Parashar,V Parihar,Soon Kew Park,R Partridge,N Parua,A Patwa,B Penning,M Perfilov,Y Peters,K Petridis,G Petrillo,P Petroff,M A Pleier,P L M Podestalerma,V M Podstavkov,A V Popov,M Prewitt,Donald D Price,N Prokopenko,Jianming Qian,A Quadt,B Quinn,M S Rangel,K Ranjan,P N Ratoff,I Razumov,P Renkel,I Rippbaudot,F Rizatdinova,M Rominsky,Ashley J Ross,C Royon,P Rubinov,R Ruchti,G Sajot,P Salcido,A Sanchezhernandez,M P Sanders,A S Santos,G Savage,L Sawyer,T Scanlon,R D Schamberger,Y Scheglov,H Schellman,C Schwanenberger,R Schwienhorst,J Sekaric,H Severini,E Shabalina,V Shary,Savanna Shaw,A A Shchukin,R K Shivpuri,V Simak,P Skubic,P Slattery,D Smirnov,K J Smith,G R Snow,J P Snow,S Snyder,S Soldnerrembold,L Sonnenschein,K Soustruznik,J Stark,D A Stoyanova,M Strauss,L Suter,P Svoisky,M Titov,V V Tokmenin,Y T Tsai,K Tschanngrimm,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,A Y Verkheev,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,J Weichert,L Weltyrieger,Anthony R White,D Wicke,M R J Williams,G W Wilson,M Wobisch,D R Wood,T R Wyatt, Ying Xie,R Yamada, Shuqin Yang,T Yasuda,Y A Yatsunenko,Wanyu Ye,Zhen Ye,Haibo Yin,K Yip,S W Youn,J M Yu,J Zennamo,T G Zhao,B Zhou, Juanjuan Zhu,M Zielinski,D Zieminska,L Zivkovic

PHYSICS LETTERS B（2013）

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摘要

We present a measurement of the ratio of multijet cross sections in p (p) over barp collisions at root s = 1.96 TeV at the Fermilab Tevatron Collider. The measurement is based on a data set corresponding to an integrated luminosity of 0.7 fb(-1) collected with the DO detector. The ratio of the inclusive three-jet to two-jet cross sections, R-3/2, has been measured as a function of the jet transverse momenta. The data are compared to QCD predictions in different approximations. Popular tunes of the PYriiiA event generator do not agree with the data, while SHERPA provides a reasonable description of the data. A perturbative QCD prediction in next-to-leading order in the strong coupling constant, corrected for non-perturbative effects, gives a good description of the data. (C) 2013 Elsevier B.V. All rights reserved.

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关键词

collisions,ratio,measurement,three-jet,two-jet

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