Measurement of b-Quark Fragmentation Fractions in pp[over ¯] Collisions at sqrt[s]=1.8 TeV.
T Affolder,H Akimoto,A Akopian,M G Albrow,P Amaral,S R Amendolia,D Amidei,J Antos,G Apollinari,T Arisawa,T Asakawa,W Ashmanskas,M Atac,P Azzi-Bacchetta,N Bacchetta,M W Bailey,S Bailey,P de Barbaro,A Barbaro-Galtieri,V E Barnes,B A Barnett,M Barone,G Bauer,F Bedeschi,S Belforte,G Bellettini,J Bellinger,D Benjamin,J Bensinger,A Beretvas,J P Berge,J Berryhill,S Bertolucci,B Bevensee,A Bhatti,C Bigongiari,M Binkley,D Bisello,R E Blair,C Blocker,K Bloom,B Blumenfeld,B S Blusk,A Bocci,A Bodek,W Bokhari,G Bolla,Y Bonushkin,D Bortoletto,J Boudreau,A Brandl,S van den Brink,C Bromberg,N Bruner,E Buckley-Geer,J Budagov,H S Budd,K Burkett,G Busetto,A Byon-Wagner,K L Byrum,M Campbell,A Caner,W Carithers,J Carlson,D Carlsmith,J Cassada,A Castro,D Cauz,A Cerri,P S Chang,P T Chang,J Chapman,C Chen,Y C Chen,M T Cheng,M Chertok,G Chiarelli,I Chirikov-Zorin,G Chlachidze,F Chlebana,L Christofek,M L Chu,S Cihangir,C I Ciobanu,A G Clark,M Cobal,E Cocca,A Connolly,J Conway,J Cooper,M Cordelli,J Guimaraes da Costa,D Costanzo,J Cranshaw,D Cronin-Hennessy,R Cropp,R Culbertson,D Dagenhart,F Dejongh,S Dell'agnello,M Dell'orso,R Demina,L Demortier,M Deninno,P F Derwent,T Devlin,J R Dittmann,S Donati,J Done,T Dorigo,N Eddy,K Einsweiler,J E Elias,E Engels,W Erdmann,D Errede,S Errede,Q Fan,R G Feild,C Ferretti,I Fiori,B Flaugher,G W Foster,M Franklin,J Freeman,J Friedman,Y Fukui,S Gadomski,S Galeotti,M Gallinaro,T Gao,M Garcia-Sciveres,A F Garfinkel,P Gatti,C Gay,S Geer,D W Gerdes,P Giannetti,P Giromini,V Glagolev,M Gold,J Goldstein,A Gordon,A T Goshaw,Y Gotra,K Goulianos,H Grassmann,C Green,L Groer,C Grosso-Pilcher,M Guenther,G Guillian,R S Guo,C Haber,E Hafen,S R Hahn,C Hall,T Handa,R Handler,W Hao,F Happacher,K Hara,A D Hardman,R M Harris,F Hartmann,K Hatakeyama,J Hauser,J Heinrich,A Heiss,B Hinrichsen,K D Hoffman,C Holck,R Hollebeek,L Holloway,R Hughes,J Huston,J Huth,H Ikeda,M Incagli,J Incandela,G Introzzi,J Iwai,Y Iwata,E James,H Jensen,M Jones,U Joshi,H Kambara,T Kamon,T Kaneko,K Karr,H Kasha,Y Kato,T A Keaffaber,K Kelley,M Kelly,R D Kennedy,R Kephart,D Khazins,T Kikuchi,M Kirk,B J Kim,H S Kim,S H Kim,Y K Kim,L Kirsch,S Klimenko,D Knoblauch,P Koehn,A Köngeter,K Kondo,J Konigsberg,K Kordas,A Korytov,E Kovacs,J Kroll,M Kruse,S E Kuhlmann,K Kurino,T Kuwabara,A T Laasanen,N Lai,S Lami,S Lammel,J I Lamoureux,M Lancaster,G Latino,T Lecompte,A M Lee,S Leone,J D Lewis,M Lindgren,T M Liss,J B Liu,Y C Liu,N Lockyer,M Loreti,D Lucchesi,P Lukens,S Lusin,J Lys,R Madrak,K Maeshima,P Maksimovic,L Malferrari,M Mangano,M Mariotti,G Martignon,A Martin,J A Matthews,P Mazzanti,K S McFarland,P McIntyre,E McKigney,M Menguzzato,A Menzione,E Meschi,C Mesropian,C Miao,T Miao,R Miller,J S Miller,H Minato,S Miscetti,M Mishina,N Moggi,E Moore,R Moore,Y Morita,A Mukherjee,T Muller,A Munar,P Murat,S Murgia,M Musy,J Nachtman,S Nahn,H Nakada,T Nakaya,I Nakano,C Nelson,D Neuberger,C Newman-Holmes,C Y Ngan,P Nicolaidi,H Niu,L Nodulman,A Nomerotski,S H Oh,T Ohmoto,T Ohsugi,R Oishi,T Okusawa,J Olsen,C Pagliarone,F Palmonari,R Paoletti,V Papadimitriou,S P Pappas,A Parri,D Partos,J Patrick,G Pauletta,M Paulini,A Perazzo,L Pescara,T J Phillips,G Piacentino,K T Pitts,R Plunkett,A Pompos,L Pondrom,G Pope,F Prokoshin,J Proudfoot,F Ptohos,G Punzi,K Ragan,D Reher,W Riegler,A Ribon,F Rimondi,L Ristori,W J Robertson,A Robinson,T Rodrigo,S Rolli,L Rosenson,R Roser,R Rossin,W K Sakumoto,D Saltzberg,A Sansoni,L Santi,H Sato,P Savard,P Schlabach,E E Schmidt,M P Schmidt,M Schmitt,L Scodellaro,A Scott,A Scribano,S Segler,S Seidel,Y Seiya,A Semenov,F Semeria,T Shah,M D Shapiro,P F Shepard,T Shibayama,M Shimojima,M Shochet,J Siegrist,G Signorelli,A Sill,P Sinervo,P Singh,A J Slaughter,K Sliwa,C Smith,F D Snider,A Solodsky,J Spalding,T Speer,P Sphicas,F Spinella,M Spiropulu,L Spiegel,L Stanco,J Steele,A Stefanini,J Strologas,F Strumia,D Stuart,K Sumorok,T Suzuki,R Takashima,K Takikawa,M Tanaka,T Takano,B Tannenbaum,W Taylor,M Tecchio,P K Teng,K Terashi,S Tether,D Theriot,R Thurman-Keup,P Tipton,S Tkaczyk,K Tollefson,A Tollestrup,H Toyoda,W Trischuk,J F de Troconiz,S Truitt,J Tseng,N Turini,F Ukegawa,J Valls,S Vejcik,G Velev,R Vidal,R Vilar,I Vologouev,D Vucinic,R G Wagner,R L Wagner,J Wahl,N B Wallace,A M Walsh,C Wang,C H Wang,M J Wang,T Watanabe,T Watts,R Webb,H Wenzel,W C Wester,A B Wicklund,E Wicklund,H H Williams,P Wilson,B L Winer,D Winn,S Wolbers,D Wolinski,J Wolinski,S Worm,X Wu,J Wyss,A Yagil,W Yao,G P Yeh,P Yeh,J Yoh,C Yosef,T Yoshida,I Yu,S Yu,A Zanetti,F Zetti,S Zucchelli,
Physical review letters（2000）
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摘要
We have studied the production of B hadrons in 1.8-TeV pp[over ¯] collisions. We present measurements of the fragmentation fractions, f_{u}, f_{d}, f_{s}, and f_{baryon}, of produced b quarks that yield B^{+}, B^{0}, B_{s}^{0}, and Λ[over ¯]_{b}^{0} hadrons. Reconstruction of five electron-charm final states yields f_{s}/( f_{u}+f_{d})=0.213±0.068 and f_{baryon}/( f_{u}+f_{d})=0.118±0.042, assuming f_{u}=f_{d}. If all B hadrons produced in pp[over ¯] collisions cascade to one of these four hadrons, we determine f_{u}=f_{d}=0.375±0.023, f_{s}=0.160±0.044, and f_{baryon}=0.090±0.029. If we do not assume f_{u}=f_{d}, we find f_{d}/f_{u}=0.84±0.16.
