High-Precision Measurement Of The Left-Right Z Boson Cross-Section Asymmetry

Kenji Abe,Koya Abe,T. Abe,I. Adam,H. Akimoto,D. Aston,K. Baird,C. Baltay,H. Band,T. Barklow,J. Bauer,G. Bellodi,R. Berger,G. Blaylock, J. Bogart,G. Bower,J. Brau,M. Breidenbach,W. Bugg,D. Burke,T. Burnett,P. Burrows,A. Calcaterra,R. Cassell,A. Chou,H. Cohn,J. Coller,M. Convery,V. Cook,R. Cowan,G. Crawford,C. Damerell,M. Daoudi, S. Dasu,N. de Groot,R. de Sangro,D. Dong,M. Doser,R. Dubois,I. Erofeeva,V. Eschenburg,E. Etzion,S. Fahey,D. Falciai,J. Fernandez,M. Fero,K. Flood,R. Frey,E. Hart,K. Hasuko,S. Hertzbach,M. Huffer,X. Huynh,M. Iwasaki,D. Jackson,P. Jacques,J. Jaros,Z. Jiang,A. Johnson,J. Johnson,R. Kajikawa,H. Kang,M. Kalelkar,R. Kofler,R. Kroeger,M. Langston,D. Leith,V. Lia,C. Lin,G. Mancinelli,S. Manly,G. Mantovani,T. Markiewicz,T. Maruyama,A. McKemey,R. Messner,K. Moffeit,T. Moore,M. Morii,D. Muller,V. Murzin,S. Narita,U. Nauenberg,H. Neal,G. Nesom,N. Oishi,D. Onoprienko,L. Osborne,R. Panvini,C. Park,I. Peruzzi,M. Piccolo,L. Piemontese, R. Plano,R. Prepost,C. Prescott,B. Ratcliff,J. Reidy,P. Reinertsen,L. Rochester,P. Rowson,J. Russell,O. Saxton,T. Schalk,B. Schumm,J. Schwiening,V. Serbo,G. Shapiro,N. Sinev,J. Snyder,H. Staengle,A. Stahl,P. Stamer,H. Steiner,D. Su,F. Suekane,A. Sugiyama,M. Swartz,F. Taylor,J. Thom,E. Torrence,T. Usher,J. Va'vra,R. Verdier,D. Wagner,A. Waite,S. Walston,J. Wang,A. Weidemann,E. Weiss,J. Whitaker,S. Williams,S. Willocq,R. Wilson,W. Wisniewski,J. Wittlin,M. Woods,T. Wright,R. Yamamoto,J. Yashima,S. Yellin,C. Young,H. Yuta

PHYSICAL REVIEW LETTERS（2000）

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摘要

We present a measurement of the left-right cross-section asymmetry (A(LR)) for Z boson production by e(+) e(-) collisions. The measurement includes the final data taken with the SLD detector at the SLAC Linear Collider during the period 1996-1998. Using a sample of 383 487 Z decays collected during the 1996-1998 runs-we measure the pole value of the asymmetry, A(LR)(0), to be 0.150 56 +/- 0.002 39 which is equivalent to an effective weak mixing angle of sin(2)theta(W)(eff) = 0.231 07 +/- 0.000 30. Our result for the complete 1992-1998 data set comprising approximately 537 000 Z decays is sin(2)theta(W)(eff) = 0.230 97 +/- 0.000 27.

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