Measurement of the differential photon + $c$-jet cross section and the ratio of differential photon+ $c$ and photon+ $b$ cross sections in proton-antiproton collisions at $\sqrt{s}=1.96$ TeV

V M Abazov, A Kupco, R K Shivpuri,A V Kozelov,G Facini,E Camachoperez, M D Hildreth,Mark Hohlfeld, Y Enari,A Jonckheere, B C K Casey,G W Wilson,U Heintz,A Goussiou, M P Sanders,J D Hobbs,S Chevalierthery,V A Kuzmin,Darren Price, J Hays,L Zivkovic, M Cooke,S Greder,Richard J Van Kooten,E Chapon, C Royon,J P Negret, T G Zhao,A Juste,Nazar Bartosik, Y N Kharzheev,J Weichert,Arnd Meyer,B Hoeneisen,I Rippbaudot, V Hynek,N Khalatyan,G Landsberg, K Johns,S Uzunyan,Bannanje Sripath Acharya,Hengne Li, T Hebbeker, P Skubic,P L M Podestalerma,I Howley, G Alejandro Garciaguerra, J Stark,Sungwoong Cho,M W Gruenewald, P Neustroev, A Harel, R Hirosky,G Davies,Ashish Kumar,M Fortner, V L Malyshev,R Partridge,Alexey P Popov, Phillipe Luc Gris,Zhenyu Ye,T Hoang,V N Evdokimov,J A Garciagonzalez, M C Cousinou,Harald Fox,M Naimuddin,K Yip, T R Wyatt,W Fisher, H Severini,C L Mcgivern,V V Lipaev,Liang Han,Heugene Fisk,A Melnitchouk, K Petridis,M Begalli, C Avila,V E Bazterra,J Ellison,L S Vertogradov,M Vesterinen,L Sonnenschein, P Lebrun, G Hesketh,K Tschanngrimm, Rdean Schamberger,J Osta, R Kehoe,J Martinezortega,J Orduna,Jiaming Yu, Kwok Ming Leo Chan,P Verdier,I Bertram,David G Savage,A Evdokimov, Y Xie, M S Rangel,V M Podstavkov, A Khanov,Qizhong Li,F Couderc, L V Dudko, J Snow, M Diesburg,D Denisov, A K Dubey,G Ginther, B Baldin, M A Pleier,A S Ito, K Harder,Bing Zhou,N Osman,Sijbrand Jan De Jong, R Lipton,M Prewitt,C Deterre,Eduard De La Cruzburelo,Sudeep Bhatia,D Smirnov, Savanna Shaw,S Kermiche, J Q Brown,Wanyu Ye,R Madar,V Shary,D Aaron M Dominguez, S P Denisov,R Demina, F Rizatdinova, Z Hubacek,A Y Verkheev, P C Bhat,F Fiedler,P Slattery,H Evans, C P Buszello,M Jaffre, S Burdin,A L Lyon,K J Smith, G Petrillo,Julie Hogan,A A Shchukin,R Beuselinck,J Clutter,W M Lee,P Svoisky,J Zennamo, A White, T Kurca,P Salcido,M Zielinski,M Rominsky, T Guillemin, V Simak,Arnab Pal,M Wobisch, J M Kohli, K Augsten, P Baringer,V Buescher, D Claes, K Ranjan,P N Ratoff,I Razumov, G Watts,S Snyder, M Mulhearn,R Brock, R Bernhard,A S Santos,W Geng, D Wicke,V V Tokmenin,A Sanchezhernandez,G Golovanov, R Ruchti,Minsoo Jeong,V Bunichev,Arnulf Quadt,Y Scheglov, B Penning,L Weltyrieger,A Grohsjean, C Schwanenberger,G Gutierrez,E Nagy, Willem M Van Leeuwen, H J Lubatti, Rafael Lopes De Sa,A P Heinson,A W Jung,V Parihar,Michael Hls Wang, E D Johnson,S Blessing,J M Hauptman,C Hensel,Y A Yatsunenko,Ivan Herediade La Cruz,A Croc,D P Brown,F Filthaut,A Boehnlein,G Borissov,G Grenier, N Varelas, A Garciabellido,D Chakraborty,P D Grannis, M Narain,K Soustruznik, H Schellman,E Shabalina, Jeong Ku Lim,Yanwen Liu,Amitabha Das, G Alkhazov,N Parua,R Illingworth,Hang Yin,R Lunagarcia,M M Meijer,G D Alexeev, G Sajot,T Adams, P Vokac,A Alton,J F Grivaz,M Titov,D Boline, Jfrederick Bartlett, A Patwa, S B Beri,Breese Quinn,Y Ilchenko,S Desai, Sehwook Lee,M Corcoran,T Scanlon,S Atkins, D Zieminska, C E Gerber,D V Bandurin, T Nunnemann, Y Maravin, M Perfilov,Subhendu Chakrabarti,M Buehler, S K Park, Marvin Johnson,E E Boos,E Kajfasz, Hlee Sawyer,Dikai Li,B Tuchming, J Kraus, S Cihangir,B Choudhary,I A Vasilyev, V Bhatnagar,Junjie Zhu,Sudhir Malik,Lei Feng,M Adams, D R Wood,Y Gershtein,Huanzhao Liu, Vdaniel Elvira,Siqi Yang,Pengfei Ding,G Blazey,A Bross,N K Mondal,A Dyshkant,Anthony Ross, D Gerbaudo,S Lammers,T Head,Sunanda Banerjee,R Jesik,N Parashar, M Wayne,H Castillavaldez, S Caughron,L Bagby, P Renkel, I Kiselevich,K Herner,A Duperrin, H A Neal,Jeremie Lellouch,S Dutt, Daniel Duggan,K Bloom,A Jayasinghe,R Yamada,Guo Chen, L Bellantoni,J Sekaric, P Rubinov,W E Cooper, S Gruenendahl,U Bassler,Liang Li,A Lobodenko,D Karmanov, M Strauss,I Katsanos,A Brandt,Frederique Badaud, D Vilanova,Jianming Qian,M Verzocchi, Sungwoo Youn,R Mccarthy, A Kharchilava,M Merkin,Phillip Gutierrez,A Bean,Oleg Brandt, G R Snow,A Chandra,Xiaowen Lei,M Padilla,S Soldnerrembold,L Uvarov, T Ferbel,D A Stoyanova,J Linnemann,Yuntse Tsai,S Fuess,T Yasuda,F Deliot, Arthur Ka Maciel,S Jabeen, Reinhild Yvonne Fatima Peters, E Barberis,Hthomas Diehl, J Haley, M Besancon,Pascal Gay, V Gavrilov,K Devaughan,P A Kasper, G Bernardi,H D Wahl,Peng Jiang,C Tully, M Eads, E W Varnes,P Jonsson,S Uvarov,D Menezes, D Lincoln,Suyong Choi, A Askew,Xuebing Bu, D Edmunds,P Petroff, Louise Suter,D Hedin, B Abbott, D Tsybychev, D Cutts,N Prokopenko,F Miconi, R Schwienhorst, R Maganavillalba,M R J Williams,Hatim Hegab,Hyunsu Lee,P G Mercadante,J Meyer, I Iashvili,M Lokajicek, Jadwiga Warchol,Jyoti Joshi,R Nayyar,H Greenlee,H T Nguyen

PHYSICS LETTERS B（2013）

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摘要

We present measurements of the differential cross section d sigma/dp(T)(gamma) for the associated production of a c-quark jet and an isolated photon with rapidity vertical bar y(gamma)vertical bar < 1.0 and transverse momentum 30 < p(T)(gamma) < 300 GeV. The c-quark jets are required to have vertical bar y(jet)vertical bar < 1.5 and p(T)(jet) > 15 GeV. The ratio of differential cross sections for gamma + c to gamma + b production as a function of p(T)(gamma) is also presented. The results are based on data corresponding to an integrated luminosity of 8.7 fb(-1) recorded with the D0 detector at the Fermilab Tevatron p (p) over bar Collider at root s = 1.96 TeV. The obtained results are compared to next-to-leading order perturbative QCD calculations using various parton distribution functions, to predictions based on the k(T)-factorization approach, and to predictions from the SHERPA and PYTHIA Monte Carlo event generators. (c) 2013 Elsevier B.V. All rights reserved.

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factorization,monte carlo

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