Direct Measurement Of Parity Violation In The Coupling Of Z(0) Bosons To B Quarks Using A Mass Tag And Momentum-Weighted Track Charge

K. Abe,T. Abe,I. Adam,T. Akagi,N. Allen,A. Arodzero,W. Ash,D. Aston,K. Baird,C. Baltay,H. Band,M. Barakat,O. Bardon,T. Barklow,J. Bauer,G. Bellodi,R. Ben-David,A. Benvenuti,G. Bilei,D. Bisello,G. Blaylock,J. Bogart,B. Bolen,G. Bower,J. Brau,M. Breidenbach,W. Bugg,D. Burke,T. Burnett,P. Burrows,A. Calcaterra,D. Caldwell,D. Calloway,B. Camanzi,M. Carpinelli,R. Cassell,R. Castaldi,A. Castro,M. Cavalli-Sforza,A. Chou,E. Church,H. Cohn,J. Coller,M. Convery,V. Cook,R. Cotton,R. Cowan,D. Coyne,G. Crawford,C. Damerell,M. Danielson,M. Daoudi,N. de Groot,R. Dell'Orso,P. Dervan,R. de Sangro,M. Dima,A. D'Oliveira,D. Dong,P. Du,R. Dubois,B. Eisenstein,V. Eschenburg,E. Etzion,S. Fahey,D. Falciai,C. Fan,J. Fernandez,M. Fero,K. Flood,R. Frey,T. Gillman,G. Gladding,S. Gonzalez,E. Hart,J. Harton,A. Hasan,K. Hasuko,S. Hedges,S. Hertzbach,M. Hildreth,J. Huber,M. Huffer,E. Hughes,X. Huynh,H. Hwang,M. Iwasaki,D. Jackson,P. Jacques,J. Jaros,Z. Jiang,A. Johnson,J. Johnson,R. Johnson,T. Junk,R. Kajikawa,M. Kalelkar,Y. Kamyshkov,H. Kang,I. Karliner,H. Kawahara,Y. Kim,R. King,M. King,R. Kofler,N. Krishna,R. Kroeger,M. Langston,A. Lath,D. Leith,V. Lia,C.-J. Lin,X. Liu,M. Liu,M. Loreti,A. Lu,H. Lynch,J. Ma,G. Mancinelli,S. Manly,G. Mantovani,T. Markiewicz,T. Maruyama,H. Masuda,E. Mazzucato,A. McKemey,B. Meadows,G. Menegatti,R. Messner,P. Mockett,K. Moffeit,T. Moore,M. Morii,D. Muller,V. Murzin,T. Nagamine,S. Narita,U. Nauenberg,H. Neal,M. Nussbaum,N. Oishi,D. Onoprienko,L. Osborne,R. Panvini,H. Park,C. Park,T. Pavel,I. Peruzzi,M. Piccolo,L. Piemontese,E. Pieroni,K. Pitts,R. Plano,R. Prepost,C. Prescott,G. Punkar,J. Quigley,B. Ratcliff,T. Reeves,J. Reidy,P. Reinertsen,P. Rensing,L. Rochester,P. Rowson,J. Russell,O. Saxton,T. Schalk,R. Schindler,B. Schumm,J. Schwiening,S. Sen,V. Serbo,M. Shaevitz,J. Shank,G. Shapiro,D. Sherden,K. Shmakov,C. Simopoulos,N. Sinev,S. Smith,M. Smy,J. Snyder,H. Staengle,A. Stahl,P. Stamer,H. Steiner,R. Steiner,M. Strauss,D. Su,F. Suekane,A. Sugiyama,S. Suzuki,M. Swartz,A. Szumilo,T. Takahashi,F. Taylor,J. Thom,E. Torrence,N. Toumbas,A. Trandafir,J. Turk,T. Usher,C. Vannini,J. Va'vra,E. Vella,J. Venuti,R. Verdier,P. Verdini,S. Wagner,D. Wagner,A. Waite,S. Walston,J. Wang,C. Ward,S. Watts,A. Weidemann,E. Weiss,J. Whitaker,S. White,F. Wickens,B. Williams,D. Williams,S. Williams,S. Willocq,R. Wilson,W. Wisniewski,J. Wittlin,M. Woods,G. Word,T. Wright,J. Wyss,R. Yamamoto,J. Yamartino,X. Yang,J. Yashima,S. Yellin,C. Young,H. Yuta,G. Zapalac,R. Zdarko,J. Zhou

PHYSICAL REVIEW LETTERS（1998）

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摘要

We present a direct measurement of the parity-violation parameter A(b) using a self-calibrating track-charge technique. In the SLAG Linear Collider Large Detector (SLD) experiment we observe hadronic decays of Z(0) bosons produced in collisions between longitudinally polarized electrons and unpolarized positrons at the SLAG Linear Collider. A sample of b (b) over bar events is selected using the topologically reconstructed mass of B hadrons. From our 1993-1995 sample of approximately 150 000 hadronic Z(0) decays, we obtain A(b) = 0.911 +/- 0.045(stat) +/- 0.045(syst).

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关键词

coupling ofz0bosons tobquarks,parity violation,momentum-weighted

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