Studies of W boson plus jets production in p(p)over-bar collisions at root s=1.96 TeV

V M Abazov, B Abbott,B S Acharya,M Adams,Todd 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 K 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 S Brown,X B Bu,Marc 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,G Chen,S W Cho,Seunghyuk Choi,B Choudhary, S Cihangir,D Claes,J Clutter, M Cooke,W E Cooper,M Corcoran, F Couderc, M C Cousinou, D Cutts,A Das,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,A Duperrin,S Dutt,A Dyshkant, M Eads, D Edmunds,J Ellison, V D Elvira,Y Enari,H Evans,V N Evdokimov,Le 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,W Geng, C E Gerber, Y Gershtein,G Ginther,G Golovanov,P D Grannis,S Greder,H Greenlee,G Grenier,Ph Gris,J F Grivaz, A Grohsjean, S Gruenendahl, M W Gruenewald, T Guillemin,G Gutierrez,P Gutierrez, J Haley, L Han, K Harder, A Harel,J M Hauptman, J Hays,T Head, T Hebbeker, D Hedin,H 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,J 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,Peng Jiang, K Johns,Erik D Johnson,M Johnson,A Jonckheere,P Jonsson,J Joshi,A W Jung, A Juste, E Kajfasz,D Karmanov,I Katsanos, R Kehoe,S Kermiche,N Khalatyan, A Khanov, A Kharchilava,Y N Kharzheev, I Kiselevich, J M Kohli,A V Kozelov,Johann M Kraus,A Kumar, A Kupco, T Kurca,V A Kuzmin,S Lammers, P Lebrun,H S Lee,Seung Won Lee,W M Lee,X Lei,J Lellouch, Deren Li,H Li,Lin Li,Q Z Li,Jae Kyu Lim,D Lincoln,J Linnemann, V V Lipaev, R Lipton,Hua Liu,Y Liu, A Lobodenko, M Lokajicek,R Lopes De Sa,R Lunagarcia,A L Lyon,A K A Maciel, R Maganavillalba,S Malik, V L Malyshev,J Mansour, 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,H T Nguyen, T Nunnemann,J Orduna,N Osman,J Osta, M Padilla,A Pal, N Parashar,V Parihar, S K 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,David A Price,N Prokopenko, J Qian, A Quadt,B Quinn,M S Rangel, P N Ratoff,I Razumov,I Rippbaudot, F Rizatdinova,M Rominsky, Alan D Ross, C Royon, P Rubinov, R Ruchti, G Sajot,P Salcido, A Sanchezhernandez, M P Sanders,A S Santos,G Savage,Lee Sawyer,T Scanlon, R D Schamberger,Y Scheglov, H Schellman, C Schwanenberger, R Schwienhorst,J Sekaric, H Severini, E Shabalina,V Shary,S Shaw,A A Shchukin, R K Shivpuri, V Simak, P Skubic,P Slattery,D Smirnov,K J Smith, G R Snow, J Snow,Solomon H Snyder, S Soeldnerrembold, L Sonnenschein,K Soustruznik, J Stark,D A Stoyanova,Michael A Strauss,L Suter,P Svoisky, M Titov,V V Tokmenin,Y T Tsai, 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,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, A White, D Wicke,M R J Williams,G W Wilson,M Wobisch, D R Wood, T R Wyatt,Y Xie,R Yamada, Shengyue Yang,T Yasuda,Y A Yatsunenko,W Ye,Zhibiao Ye,Hang Yin,K Yip,S W Youn,J M Yu,J Zennamo, T G Zhao,B Zhou,Jianlin Zhu, M Zielinski, D Zieminska,L Zivkovic

PHYSICAL REVIEW D（2013）

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摘要

We present a comprehensive analysis of inclusive W(-> ev) + n-jet (n >= 1, 2, 3, 4) production in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV at the Tevatron collider using a 3.7 fb(-1) data set collected by the D0 detector. Differential cross sections are presented as a function of the jet rapidities (y), lepton transverse momentum (P-T) and pseudorapidity (eta), the scalar sum of the transverse energies of the W boson and all jets (H-T), leading dijet P-T and invariant mass, dijet rapidity separations for a variety of jet pairings for P-T-ordered and angular-ordered jets, dijet opening angle, dijet azimuthal angular separations for P-T-ordered and angular-ordered jets, and W boson transverse momentum. The mean number of jets in an event containing a W boson is measured as a function of H-T, and as a function of the rapidity separations between the two highest-P-T jets and between the most widely separated jets in rapidity. Finally, the probability for third-jet emission in events containing a W boson and at least two jets is studied by measuring the fraction of events in the inclusive W + 2-jet sample that contain a third jet over a P-T threshold. The analysis employs a regularized singular value decomposition technique to accurately correct for detector effects and for the presence of backgrounds. The corrected data are compared to particle level next-to-leading-order perturbative QCD predictions, predictions from all-order resummation approaches, and a variety of leading-order and matrix element plus parton shower event generators. Regions of the phase space where there is agreement or disagreement with the data are discussed for the different models tested.

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