Evidence for Simultaneous Production of J/ψ and ϒ Mesons.
V M Abazov,B Abbott,B S Acharya,M Adams,T Adams, J P Agnew,G D Alexeev, G Alkhazov,A Alton, A Askew,S Atkins, K Augsten,V Aushev,C Avila,F Badaud,L Bagby, B Baldin,D V Bandurin,S Banerjee,E Barberis, P Baringer,J F Bartlett,U Bassler, V Bazterra, A Bean,M Begalli, L Bellantoni, S B Beri,G Bernardi, R Bernhard, I Bertram, M Besançon,R Beuselinck,P C Bhat,S Bhatia,V Bhatnagar, G Blazey,S Blessing,K Bloom, A Boehnlein, D Boline, E E Boos,G Borissov, M Borysova,A Brandt,O Brandt,R Brock,A Bross,D Brown,X B Bu,M Buehler, V Buescher,V Bunichev,S Burdin, C P Buszello,E Camacho-Pérez,B C K Casey, H Castilla-Valdez, S Caughron, S Chakrabarti,K M Chan,A Chandra,E Chapon,G Chen, 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, J Cuth,D Cutts,A Das,G Davies,S J de Jong,E De La Cruz-Burelo,F Déliot, R Demina,D Denisov,S P Denisov, S Desai,C Deterre, K DeVaughan,H T Diehl,M Diesburg,P F Ding,A Dominguez,A Dubey,L V Dudko,A Duperrin,S Dutt, M Eads, D Edmunds,J Ellison, V D Elvira, Y Enari,H Evans, A Evdokimov,V N Evdokimov, A Fauré,L Feng, T Ferbel,F Fiedler,F Filthaut, W Fisher,H E Fisk, M Fortner,H Fox,J Franc, S Fuess, P H Garbincius, A Garcia-Bellido, J A García-González, V Gavrilov,W Geng, C E Gerber, Y Gershtein, G Ginther,O Gogota, G Golovanov,P D Grannis,S Greder, H Greenlee, G Grenier,Ph Gris,J-F Grivaz,A Grohsjean,S Grünendahl, M W Grünewald, 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 Heredia-De La Cruz, K Herner, G Hesketh,M D Hildreth, R Hirosky,T Hoang, J D Hobbs, B Hoeneisen,J Hogan, M Hohlfeld, J L Holzbauer, I Howley, Z Hubacek, V Hynek, I Iashvili, Y Ilchenko,R Illingworth, A S Ito, S Jabeen, M Jaffré,A Jayasinghe, M S Jeong, R Jesik,P Jiang, K Johns,E Johnson, M Johnson,A Jonckheere,P Jonsson,J Joshi,A W Jung,A Juste, E Kajfasz, D Karmanov, I Katsanos,M Kaur,R Kehoe,S Kermiche, N Khalatyan, A Khanov, A Kharchilava,Y N Kharzheev, I Kiselevich, J M Kohli,A V Kozelov, J Kraus,A Kumar, A Kupco,T Kurča,V A Kuzmin,S Lammers, P Lebrun,H S Lee,S W Lee,W M Lee,X Lei, J Lellouch,D Li,H Li,L Li, Q Z Li, J K Lim,D Lincoln, J Linnemann, V V Lipaev, R Lipton,H Liu,Y Liu, A Lobodenko,M Lokajicek,R Lopes de Sa,R Luna-Garcia, A L Lyon, A K A Maciel,R Madar, R Magaña-Villalba,S Malik,V L Malyshev,J Mansour, J Martínez-Ortega, 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 Narain,R Nayyar, H A Neal,J P Negret, P Neustroev,H T Nguyen, T Nunnemann,J Orduna,N Osman, J Osta,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 Pétroff,M-A Pleier,V M Podstavkov,A V Popov, M Prewitt,D Price,N Prokopenko, J Qian, A Quadt,B Quinn, P N Ratoff,I Razumov,I Ripp-Baudot, F Rizatdinova, M Rominsky,A Ross, C Royon, P Rubinov, R Ruchti, G Sajot,A Sánchez-Hernández, M P Sanders,A S Santos,G Savage, M Savitskyi,L Sawyer,T Scanlon,R D Schamberger,Y Scheglov,H Schellman,M Schott, C Schwanenberger,R Schwienhorst, J Sekaric, H Severini,E Shabalina, V Shary,S Shaw, A A Shchukin, V Simak, P Skubic, P Slattery,D Smirnov,G R Snow, J Snow,S Snyder,S Söldner-Rembold, L Sonnenschein,K Soustruznik, J Stark, D A Stoyanova, M 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 Welty-Rieger, M R J Williams,G W Wilson, M Wobisch, D R Wood, T R Wyatt,Y Xie,R Yamada,S Yang,T Yasuda, Y A Yatsunenko,W Ye,Z Ye, H Yin,K Yip, S W Youn, J M Yu, J Zennamo, T G Zhao,B Zhou, J Zhu, M Zielinski,D Zieminska, L Zivkovic
PHYSICAL REVIEW LETTERS（2016）
引用 63|浏览121
摘要
We report evidence for the simultaneous production of J/psi and Upsilon mesons in 8.1 fb(-1) of data collected at root s = 1.96 TeV by the D0 experiment at the Fermilab p (p) over bar Tevatron Collider. Events with these characteristics are expected to be produced predominantly by gluon-gluon interactions. In this analysis, we extract the effective cross section characterizing the initial parton spatial distribution, sigma(eff) = 2.2 +/- 0.7(stat) +/- 0.9(syst) mb.
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