Measurement Of The Average Time-Integrated Mixing Probability Of B-Flavored Hadrons Produced At The Fermilab Tevatron

D. Acosta,T. Affolder,H. Akimoto, M. G. Albrow,D. Ambrose, D. Amidei,K. Anikeev, J. Antos, G. Apollinari,T. Arisawa,A. Artikov,T. Asakawa,W. Ashmanskas, F. Azfar,P. Azzi-Bacchetta,N. Bacchetta,H. Bachacou,W. Badgett,S. Bailey,P. de Barbaro, A. Barbaro-Galtieri, V. E. Barnes,B. A. Barnett,S. Baroiant,M. Barone,G. Bauer,F. Bedeschi, S. Behari,S. Belforte,W. H. Bell, G. Bellettini, J. Bellinger,D. Benjamin,J. Bensinger, A. Beretvas, J. Berryhill, A. Bhatti,M. Binkley, D. Bisello,M. Bishai,R. E. Blair,C. Blocker,K. Bloom, B. Blumenfeld,S. R. Blusk, A. Bocci,A. Bodek, G. Bolla,A. Bolshov,Y. Bonushkin, D. Bortoletto,J. Boudreau,A. Brandl, C. Bromberg,M. Brozovic,E. Brubaker,N. Bruner, J. Budagov,H. S. Budd, K. Burkett,G. Busetto,K. L. Byrum,S. Cabrera,P. Calafiura, M. Campbell,W. Carithers,J. Carlson, D. Carlsmith,W. Caskey,A. Castro, D. Cauz,A. Cerri, L. Cerrito,A. W. Chan,P. S. Chang,P. T. Chang,J. Chapman,C. Chen,Y. Chen,M.-T. Cheng, M. Chertok,G. Chiarelli,I. Chirikov-Zorin,G. Chlachidze, F. Chlebana,L. Christofek,M. Chu,J. Chung,W.-H. Chung,Y. Chung, C. Ciobanu,A. Clark,M. Coca, A. Connolly,M. Convery,J. Conway,M. Cordelli,J. Cranshaw, R. Culbertson,D. Dagenhart,S. D’Auria,S. De Cecco,F. DeJongh,S. Dell’Agnello,M. Dell’Orso,S. Demers, L. Demortier, M. Deninno,D. De Pedis,P. Derwent,T. Devlin, C. Dionisi, J. Dittmann,A. Dominguez, S. Donati,M. D’Onofrio, T. Dorigo,N. Eddy, K. Einsweiler,E. Engels, R. Erbacher, D. Errede, S. Errede, R. Eusebi,Q. Fan,S. Farrington, R. Feild,J. Fernandez, C. Ferretti, R. Field,I. Fiori,B. Flaugher,L. Flores-Castillo,G. Foster,M. Franklin, J. Freeman,J. Friedman,Y. Fukui, I. Furic,S. Galeotti,A. Gallas, M. Gallinaro,T. Gao,M. Garcia-Sciveres, A. Garfinkel,P. Gatti, C. Gay, D. Gerdes,E. Gerstein,S. Giagu,P. Giannetti,K. Giolo,M. Giordani,P. Giromini,V. Glagolev,D. Glenzinski,M. Gold,N. Goldschmidt,J. Goldstein,G. Gomez, M. Goncharov,I. Gorelov,A. Goshaw, Y. Gotra, K. Goulianos,C. Green,A. Gresele,G. Grim,C. Grosso-Pilcher,M. Guenther,G. Guillian,J. Guimaraes da Costa, R. Haas, C. Haber,S. Hahn, E. Halkiadakis,C. Hall,T. Handa,R. Handler,F. Happacher, K. Hara,A. Hardman,R. Harris,F. Hartmann, K. Hatakeyama, J. Hauser,J. Heinrich,A. Heiss,M. Hennecke,M. Herndon,C. Hill, A. Hocker,K. Hoffman, R. Hollebeek,L. Holloway,S. Hou,B. Huffman, R. Hughes, J. Huston, J. Huth,H. Ikeda,C. Issever, J. Incandela,G. Introzzi,M. Iori,A. Ivanov,J. Iwai,Y. Iwata,B. Iyutin, E. James,M. Jones, U. Joshi,H. Kambara, T. Kamon,T. Kaneko,J. Kang,M. Karagoz Unel,K. Karr,S. Kartal,H. Kasha,Y. Kato,T. Keaffaber,K. Kelley,M. Kelly,R. Kennedy,R. Kephart,D. Khazins,T. Kikuchi,B. Kilminster, B. Kim,D. Kim,H. Kim, M. Kim, S. Kim,T. Kim,Y. Kim,M. Kirby,M. Kirk, L. Kirsch,S. Klimenko,P. Koehn,K. Kondo, J. Konigsberg, A. Korn, A. Korytov,K. Kotelnikov,E. Kovacs, J. Kroll, M. Kruse, V. Krutelyov, S. Kuhlmann,K. Kurino,T. Kuwabara,N. Kuznetsova,A. Laasanen,N. Lai,S. Lami,S. Lammel,J. Lancaster, K. Lannon, M. Lancaster, R. Lander, A. Lath, G. Latino, T. LeCompte,Y. Le,J. Lee,S. Lee,N. Leonardo,S. Leone, K. Li,C. Lin,M. Lindgren, T. Liss, J. Liu,T. Liu, Y. Liu,D. Litvintsev,O. Lobban,N. Lockyer, A. Loginov,J. Loken,M. Loreti,D. Lucchesi,P. Lukens,S. Lusin, L. Lyons, J. Lys,R. Madrak, K. Maeshima, P. Maksimovic, L. Malferrari,M. Mangano,G. Manca,M. Mariotti,G. Martignon,M. Martin, A. Martin, V. Martin,M. Martínez,J. Matthews, P. Mazzanti,K. McFarland,P. McIntyre,M. Menguzzato, A. Menzione, P. Merkel, C. Mesropian, A. Meyer, T. Miao,R. Miller,J. Miller,H. Minato,S. Miscetti,M. Mishina, G. Mitselmakher,Y. Miyazaki,N. Moggi,E. Moore,R. Moore,Y. Morita, T. Moulik, M. Mulhearn, A. Mukherjee, T. Muller,A. Munar,P. Murat,S. Murgia, J. Nachtman,V. Nagaslaev, S. Nahn,H. Nakada, I. Nakano,R. Napora,F. Niell, C. Nelson,T. Nelson, C. Neu, M. Neubauer,D. Neuberger, C. Newman-Holmes,C.-Y. Ngan,T. Nigmanov,H. Niu, L. Nodulman,A. Nomerotski,S. Oh,Y. Oh,T. Ohmoto, T. Ohsugi,R. Oishi,T. Okusawa, J. Olsen,W. Orejudos,C. Pagliarone, F. Palmonari,R. Paoletti,V. Papadimitriou,D. Partos,J. Patrick, G. Pauletta,M. Paulini,T. Pauly, C. Paus, D. Pellett,A. Penzo,L. Pescara,T. Phillips,G. Piacentino, J. Piedra,K. Pitts,A. Pompoš,L. Pondrom,G. Pope,T. Pratt,F. Prokoshin,J. Proudfoot,F. Ptohos,O. Pukhov,G. Punzi, J. Rademacker,A. Rakitine, F. Ratnikov,H. Ray,D. Reher, A. Reichold, P. Renton, M. Rescigno,A. Ribon,W. Riegler,F. Rimondi, L. Ristori, M. Riveline,W. Robertson, T. Rodrigo, S. Rolli,L. Rosenson, R. Roser, R. Rossin,C. Rott,A. Roy,A. Ruiz,D. Ryan,A. Safonov,R. St. Denis, W. Sakumoto, D. Saltzberg,C. Sanchez, A. Sansoni,L. Santi,S. Sarkar,H. Sato, P. Savard, A. Savoy-Navarro,P. Schlabach,E. Schmidt, M. Schmidt, M. Schmitt,L. Scodellaro,A. Scott, A. Scribano, A. Sedov, S. Seidel, Y. Seiya,A. Semenov,F. Semeria, T. Shah, M. Shapiro,P. Shepard,T. Shibayama, M. Shimojima, M. Shochet, A. Sidoti, J. Siegrist,A. Sill, P. Sinervo, P. Singh,A. Slaughter,K. Sliwa,F. Snider,R. Snihur,A. Solodsky, T. Speer,M. Spezziga,P. Sphicas, F. Spinella, M. Spiropulu,L. Spiegel, J. Steele,A. Stefanini, J. Strologas,F. Strumia, D. Stuart,A. Sukhanov, K. Sumorok,T. Suzuki,T. Takano, R. Takashima,K. Takikawa,P. Tamburello,M. Tanaka, B. Tannenbaum,M. Tecchio,R. Tesarek,P. Teng,K. Terashi,S. Tether,J. Thom,A. Thompson,E. Thomson,R. Thurman-Keup,P. Tipton, S. Tkaczyk,D. Toback, K. Tollefson,D. Tonelli,M. Tonnesmann,H. Toyoda, W. Trischuk,J. de Troconiz,J. Tseng, D. Tsybychev, N. Turini, F. Ukegawa,T. Unverhau,T. Vaiciulis,A. Varganov,E. Vataga,S. Vejcik,G. Velev,G. Veramendi,R. Vidal, I. Vila,R. Vilar, I. Volobouev,M. von der Mey, D. Vucinic,R. Wagner, W. Wagner,Z. Wan, C. Wang,M. Wang, S. Wang,B. Ward, S. Waschke,T. Watanabe, D. Waters,T. Watts, M. Weber,H. Wenzel, B. Whitehouse, A. Wicklund, E. Wicklund,T. Wilkes,H. Williams,P. Wilson,B. Winer, D. Winn,S. Wolbers,D. Wolinski,J. Wolinski, S. Wolinski,M. Wolter,S. Worm,X. Wu, F. Würthwein,J. Wyss,U. Yang, W. Yao,G. Yeh,P. Yeh,K. Yi, J. Yoh,C. Yosef,T. Yoshida, I. Yu,S. Yu,Z. Yu,J. Yun, L. Zanello, A. Zanetti,F. Zetti,S. Zucchelli

PHYSICAL REVIEW D（2004）

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摘要

We have measured the number of like-sign (LS) and opposite-sign (OS) lepton pairs arising from double semileptonic decays of b and (b) over bar hadrons, pair produced at the Fermilab Tevatron collider. The data samples were collected with the Collider Detector at Fermilab during the 1992-1995 collider run by triggering on the existence of mumu or emu candidates in an event. The observed ratio of LS to OS dileptons leads to a measurement of the average time-integrated mixing probability of all produced b-flavored hadrons which decay weakly, (chi) over bar =0.152+/-0.007 (stat)+/-0.011 (syst), that is significantly larger than the world average (chi) over bar =0.118+/-0.005.

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关键词

cdf,cross section,detector,collider,generator,cosmic background radiation,tev

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