Dijet Production by Color-Singlet Exchange at the Fermilab Tevatron

F Abe,E Kuns,B Flaugher,Z Feng,C Wang,S Geer,A T Goshaw,G Guillian,H Minato,C Miao,T Shah,W K Sakumoto,E E Schmidt,D Amidei,T Yoshida,M Garcia-Sciveres,S C Van Den Brink,R D Kennedy,R Paoletti,A D Hardman,A Köngeter,T Arisawa,Y C Liu,D Reher,A Gordon,A Perazzo,V Bolognesi,S Galeotti,L Pondrom,I Fiori,E Hayashi,T Speer,A Scribano,G Giusti,G Piacentino,M Ninomiya,U Joshi,S Park,J D Lewis,Y Teramoto,J Yoh,L Rosenson,H H Williams,R Mattingly,D Neuberger,K E Ohl,T Asakawa,M Gallinaro,A Bhatti,J Hylen,S Aota,L Nodulman,B Tannenbaum,M Binkley,J Valls,A Titov,W C Wester,R Webb,F Ptohos,S Bagdasarov,S Cihangir,P De Barbaro,C Campagnari,E Buckley-Geer,Y Kato,Y Iwata,C Loomis,R Ströhmer,M Mariotti,Y Cen,C N Chiou,G Michail,K Ragan,R Ely,R Plunkett,G Pauletta,N Moggi,C Wei,M J Wang,K Goulianos,J Benlloch,S Lammel,C Ferretti,P F Derwent,Q Fan,S Segler,B Harral,X Wu,S Lami,N Parashar,H Ikeda,H Kambara,B Bevensee,C Holck,A F Garfinkel,S H Oh,S Errede,N M Shaw,S Lusin,W J Robertson,R Vidal,K Biery,J Wolinski,W Carithers,C Blocker,S B Kim,A T Laasanen,R Wilkinson,C Yosef,M Contreras,A Beretvas,S P Pappas,H Mitsushio,M Hohlmann,K Sumorok,G Apollinari,T Saab,K Kelley,K Sliwa,V Papadimitriou,G Bellettini,J Bao,J Wyss,J E Elias,G Bolla,A Castro,M Okabe,L Spiegel,M Timko,A Sill,P Wilson,D H Kim,J Kroll,J Proudfoot,L Demortier,P Mazzanti,P K Teng,J Siegrist,L Yu,C Hawk,I Yu,M Loreti,H S Kim,M Mangano,J B Liu,J Lu,P Koehn,D Theriot,T Kaneko,K D Hoffman,D Saltzberg,P Kesten,K Burkett,A Maghakian,J Friedman,S A Hauger,G Velev,L Kirsch,S E Kuhlmann,S Miscetti,T Watts,J Patrick,L Breccia,S Miyashita,R Vilar,R Culbertson,N Eddy,G W Foster,Y Seiya,P Giannetti,K Yasuoka,J Heinrich,M Barone,M Lancaster,R S Guo,S Leone,T Kamon,A Caner,E Hafen,J Wang,C Newman-Holmes,M Chertok,L Holloway,F Cervelli,L Christofek,Y Fukui,Y Gotra,A Warburton,D Winn,F Keyvan,T Song,J Olsen,B L Winer,J Spalding,K Kondo,R L Wagner,M Krasberg,H Keutelian,R Hughes,R Handler,K Kordas,T Takano,J Huth,S R Hahn,J Chapman,B J Kim,M Incagli,J Conway,D Vucinic,L Santi,R Hollebeek,K L Byrum,N Bacchetta,D Bisello,T Dorigo,F Azfar,S Truitt,J Bellinger,H Toyoda,T L Thomas,A Cerri,N Uemura,T Rodrigo,N Turini,G Busetto,R Kephart,P S Chang,T Lecompte,T Devlin,A Stefanini,B Kharadia,E Barzi,M Spiropulu,H Grassmann,G Latino,L Gladney,P Murat,K Takikawa,R M Hans,K Hara,J P Berge,P Yeh,J Lys,D Kestenbaum,P Sphicas,M Lanzoni,M Yin,M Shimojima,J Steele,F Dejongh,W Kowald,L Pescara,W Trischuk,H Wenzel,T Uchida,W Bokhari,S Zucchelli,P Mcintyre,C Haber,H S Budd,P Lukens,D Carlsmith,M W Bailey,P Hu,D W Gerdes,W Badgett,A Dunn,F Happacher,S Bertolucci,M Shochet,L Zhang,F Spinella,H Jensen,E Cocca,Y Ye,A Tollestrup,T Miao,S Murgia,Q F Wang,C Smith,C Bromberg,J Freeman,W Zhang,J Cassada,N Giokaris,D Benton,Y Bonushkin,A Menzione,K Maeshima,A Scott,A Akopian,G Feild,A Yagil,V E Barnes,G P Yeh,G Introzzi,D Bortoletto,B A Barnett,N Tamura,O Ganel,T Okusawa,S Delchamps,J Strait,S Vejcik,K Tollefson,F Ukegawa,H Nakada,A Barbaro-Galtieri,J Tseng,F Bedeschi,M Kruse,G Houk,M Gold,J C Yun,J Hauser,T Kuwabara,S Donati,M Frautschi,Y K Kim,M Deninno,A M Walsh,I Nakano,A Parri,S Tether,L Groer,C H Wang,Y Morita,P Sinervo,M Pillai,R Roser,J Done,A Byon-Wagner,B T Huffman,J Huston,D Crane,D Wolinski,R M Harris,P F Shepard,S Rolli,E Kovacs,T Ohsugi,P T Chang,R G Wagner,A Ribon,J Romano,A Sansoni,F D Snider,N Bruner,G Sganos,T M Liss,J Cooper,B Hinrichsen,T Chikamatsu,H Frisch,J Boudreau,H Sato,W Taylor,D Toback,D Cauz,G Bauer,G Punzi,A Zanetti,W Koska,R W Kadel,S R Amendolia,T Takahashi,M Cobal,T Daniels,M Franklin,C Pagliarone,M Paulini,C Grosso-Pilcher,K Einsweiler,S Bettelli,S Funaki,H Akimoto,A Mukherjee,J Incandela,R Hamilton,R Oishi,A Korytov,R Miller,M Cordelli,F Semeria,J Iwai,S Behrends,E Wicklund,M P Schmidt,E Kajfasz,H Y Chao,D Stuart,F Rimondi,G Unal,E Engels,R E Blair,T J Phillips,F Zetti,A Bodek,S Blusk,G Chiarelli,C Couyoumtzelis,J P Marriner,E Meschi,L Ristori,N B Wallace,P Singh,M Lindgren,M Mishina,J I Lamoureux,T Miyamoto,M Campbell,D Benjamin,D Yovanovitch,C Mesropian,T A Keaffaber,P Limon,D Errede,S Tkaczyk,W Ashmanskas,K Karr,S H Kim,D Cronin-Hennessy,A B Wicklund,S Belforte,P Schlabach,P Tipton,S Metzler,T Ohmoto,H Kasha,D Lucchesi,M T Cheng ,M Ataç ,Charles A Nelson ,A Clark ,P Maksimović ,S Köpp ,N S Lockyer ,J Matthews ,S D Worm ,Junya Suzuki ,Tomoya Takada ,K Pitts ,M Vondráček ,G F Tartarelli ,M Dell’orso ,Th Müller ,L Stančo ,J Antos̆ ,R Thurman‐Keup ,Qing Shen ,J Suarez Gonzalez ,R Démina ,H D Wahl ,P Mélèse ,Hua-Rong Wei ,S C Seidel ,Michael Peters ,O R Long ,J Dittmann ,J Königsberg ,Jorge F De Trocóniz ,R P Thun ,Thomas Baumann ,Wei-Ming Yao ,S J Hong ,C Y.p Ngan ,M Albrow ,G W Sullivan ,M Shapiro ,J W Berryhill ,J R Bensinger ,Rui De Oliveira ,A Martín ,P Azzi ,S Dell’agnello ,Jacileide Guimarães

doi:10.1103/physrevlett.80.1156

Abstract

We report a new measurement of dijet production by color-singlet exchange in p{ovr p} collisions at {radical}(s)=1.8 TeV at the Fermilab Tevatron. In a sample of events with two jets of transverse energy E{sup jet}{sub T}{gt}20 GeV , pseudorapidity in the range 1.8{lt}{vert_bar}{eta}{sup jet}{vert_bar}{lt}3.5 , and {eta}{sub 1}{eta}{sub 2}{lt}0 , we find that a fraction R=[1.13{plus_minus}0.12(stat){plus_minus} 0.11(syst)]{percent} has a pseudorapidity gap within {vert_bar}{eta}{vert_bar}{lt}1 between the jets that can be attributed to color-singlet exchnage. The fraction R shows no significant dependence on E{sup jet}{sub T} or on the pseudorapidity separation between the jets. {copyright} {ital 1998} {ital The American Physical Society}

Full Text