Measurements of differential cross sections of Z/γ∗+jets+XZ/γ∗+jets+X events in pp¯ collisions at s=1.96 TeV

V M Abazov,B Abbott, M Abolins,B S Acharya,M Adams,T Adams, E Aguilo, M Ahsan, G D Alexeev, G Alkhazov,A Alton,G Alverson,G A Alves, L S Ancu, T Andeen,M S Anzelc,M Aoki,Y Arnoud,M Arov,M Arthaud, A Askew, B Asman, O Atramentov,C Avila,J Backusmayes,F Badaud,L Bagby, B Baldin,D V Bandurin,P Banerjee,Sudeshna Banerjee,E Barberis,A F Barfuss,P Bargassa, P Baringer,J Barreto,J F Bartlett,U Bassler,D Bauer, S Beale,A Bean,M Begalli,M Begel,C Belangerchampagne, L Bellantoni,A Bellavance,J A Benitez, S B Beri,G Bernardi, R Bernhard,I Bertram, M Besancon,R Beuselinck,V A Bezzubov,P C Bhat,V Bhatnagar,G Blazey,S Blessing,K Bloom,A Boehnlein,D Boline, T A Bolton,E E Boos,G Borissov,T Bose,A Brandt,R Brock,G Brooijmans,A Bross,D N Brown,X B Bu,N J Buchanan, D Buchholz,M Buehler,V Buescher,V Bunichev,S Burdin,T H Burnett, C P Buszello, P Calfayan,B Calpas, S Calvet,J Cammin, M A Carrascolizarraga,E Carrera,W Carvalho,B C K Casey,H Castillavaldez, S Chakrabarti,D Chakraborty,K M Chan,A Chandra,E Cheu,D K Cho,S Choi,B Choudhary,L Christofek,T Christoudias, S Cihangir,D Claes,J Clutter,M Cooke,W E Cooper,M Corcoran, F Couderc, M C Cousinou, S Creperenaudin,V Cuplov, D Cutts, M Cwiok, Amaresh Das,G Davies,K De,S J De Jong,E De La Cruzburelo,K Devaughan,F Deliot,M Demarteau, R Demina,D Denisov, S P Denisov,S Desai,H T Diehl, M Diesburg,A Dominguez, T Dorland, A K Dubey, L V Dudko, L Duflot, D Duggan,A Duperrin,S Dutt,A Dyshkant, M Eads, D Edmunds, J Ellison, V D Elvira, Y Enari,S Eno,P Ermolov,M Escalier,H Evans,A Evdokimov,V N Evdokimov, Alexey Ferapontov, T Ferbel, F Fiedler,F Filthaut,W Fisher,H E Fisk,M Fortner,Harald Fox,S Fu,S Fuess, T Gadfort, C F Galea, A Garciabellido, V Gavrilov, P Gay,W Geist,W Geng, C E Gerber,Y Gershtein, D Gillberg,G Ginther,B Gomez,A Goussiou,P D Grannis,S Greder,H Greenlee, Z D Greenwood,E M Gregores,G Grenier,Ph Gris,J F Grivaz,A Grohsjean,S Grunendahl,M W Grunewald, Fengfeng Guo, Jianming Guo,G Gutierrez,P Gutierrez,A Haas, N J Hadley,P Haefner, S Hagopian, J Haley,I Hall,R E Hall, L Han, K Harder, A Harel, J M Hauptman, J Hays, T Hebbeker,D Hedin, Jeroen Hegeman,A P Heinson, U Heintz,C Hensel,K Herner, G Hesketh,M D Hildreth, R Hirosky,T Hoang,J D Hobbs,B Hoeneisen, M Hohlfeld,S Hossain,P Houben,Y Hu, Z Hubacek,N Huske, V Hynek, I Iashvili,R Illingworth,A S Ito,S Jabeen,M Jaffre,Shilpi Jain, K Jakobs,David Olivier Jamin,Chad Jarvis,R Jesik,K Johns, Craig E Johnson,Michael K Johnson, D G Johnston, A Jonckheere,P Jonsson,A Juste,E Kajfasz,D Karmanov, P A Kasper,I Katsanos, V Kaushik, R Kehoe,S Kermiche,N Khalatyan, A Khanov, A Kharchilava,Y N Kharzheev,D Khatidze,T J Kim, M H Kirby,M Kirsch, B Klima, J M Kohli,J P Konrath,A V Kozelov, J Kraus, T Kuhl,A Kumar, A Kupco, T Kurca,V A Kuzmin, J Kvita,F Lacroix,D Lam,S Lammers,G Landsberg, P Lebrun,W M Lee, A Leflat,Jeremie Lellouch,Jingjing Li, Liwei Li,Q Z Li,S M Lietti, Jeong Ku Lim,D Lincoln,J Linnemann, V V Lipaev, R Lipton,Yuxuan Liu,Zhenxing Liu,A Lobodenko,M Lokajicek, Peter Love, H J Lubatti,R Lunagarcia,A L Lyon,A K A Maciel,D Mackin, P Mattig,A Magerkurth, P K Mal, Helena Malbouisson,S Malik, V L Malyshev, Y Maravin,B Martin,R Mccarthy,C L Mcgivern,M M Meijer,A Melnitchouk,L Mendoza,P G Mercadante,M Merkin,K W Merritt,A Meyer,J Meyer, J Mitrevski, R K Mommsen,N K Mondal,R Moore, T Moulik,G S Muanza, M Mulhearn,O Mundal,L Mundim,E Nagy,M Naimuddin,M Narain, H A Neal,J P Negret,P Neustroev, H Nilsen, H Nogima,S F Novaes, T Nunnemann,D C Oneil,G Obrant, C Ochando,D Onoprienko,J Orduna,N Oshima,N Osman,J Osta,R Otec,G J Otero Y Garzon,M Owen,M Padilla, P Padley,M Pangilinan, N Parashar,S K Park, J A Parsons,R Partridge,N Parua, A Patwa,G Pawloski, B Penning, M Perfilov,K Peters,Y Peters,P Petroff, R Piegaia,J Piper, M A Pleier,P L M Podestalerma,V M Podstavkov,Y Pogorelov, M E Pol,P Polozov,A V Popov, C T Potter,W L Prado Da Silva, S Protopopescu,J Qian, A Quadt,B Quinn,A Rakitine, M S Rangel,K Ranjan,P N Ratoff, P Renkel,P Rich, M Rijssenbeek,I Rippbaudot, F Rizatdinova,S Robinson, R F Rodrigues,M Rominsky, C Royon, P Rubinov, R Ruchti, G Safronov, G Sajot,A Sanchezhernandez, M P Sanders,B Sanghi,G Savage, L Sawyer,T Scanlon, D Schaile, R D Schamberger,Y Scheglov,H Schellman,T Schliephake,S Schlobohm, C Schwanenberger,R Schwienhorst,J Sekaric, H Severini,E Shabalina, M Shamim,V Shary,A A Shchukin, R K Shivpuri,V Siccardi, V Simak,V Sirotenko, P Skubic,P Slattery,D Smirnov, G R Snow, J Snow,S Snyder,S Soldnerrembold, L Sonnenschein,A Sopczak, M Sosebee,K Soustruznik, B Spurlock,Jan Stark, V Stolin,D A Stoyanova,Jonas Strandberg,Sara Strandberg, M A Strang,E Strauss, M Strauss,R Strohmer, D Strom,L Stutte,S Sumowidagdo,P Svoisky,Masaya Takahashi, A Tanasijczuk,William L Taylor,B Tiller,F Tissandier,M Titov,V V Tokmenin,I Torchiani, D Tsybychev,B Tuchming,C Tully, P M Tuts,R Unalan, L Uvarov,S Uvarov,S Uzunyan, B Vachon,P J Van Den Berg,R Van Kooten,W M Van Leeuwen, N Varelas, E W Varnes,I A Vasilyev,P Verdier, L S Vertogradov,M Verzocchi, D Vilanova,P Vint, P Vokac, M Voutilainen,R G Wagner,H D Wahl,M H L S Wang, J Warchol, G Watts, M Wayne,G Weber,M Weber,L Weltyrieger,A Wenger, M Wetstein, A White, D Wicke,M R J Williams,G W Wilson, S J Wimpenny,M Wobisch, D R Wood, T R Wyatt,Yi Xie, Congqiao Xu,S Yacoob,Ryo Yamada,W C Yang,T Yasuda,Y A Yatsunenko,Zhiming Ye,Hang Yin,K Yip, H D Yoo,S W Youn,Jing Yu, C Zeitnitz,S Zelitch,T Zhao,Baowen Zhou,Jin Zhu, M Zielinski, D Zieminska,L Zivkovic, V Zutshi,E G Zverev

Physics Letters B（2009）

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摘要

We present cross section measurements for Z/γ∗+jets+X production, differential in the transverse momenta of the three leading jets. The data sample was collected with the DØ detector at the Fermilab Tevatron pp¯ collider at a center-of-mass energy of 1.96 TeV and corresponds to an integrated luminosity of 1 fb−1. Leading and next-to-leading order perturbative QCD predictions are compared with the measurements, and agreement is found within the theoretical and experimental uncertainties. We also make comparisons with the predictions of four event generators. Two parton-shower-based generators show significant shape and normalization differences with respect to the data. In contrast, two generators combining tree-level matrix elements with a parton shower give a reasonable description of the shapes observed in data, but the predicted normalizations show significant differences with respect to the data, reflecting large scale uncertainties. For specific choices of scales, the normalizations for either generator can be made to agree with the measurements.

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12.38.Qk,13.85.Qk,13.87.-a

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