Precision measurements of the neutral current from hadron and lepton production at LEP

P. D. Acton,G J Alexander,J C S Allison,P. P. Allport,K. J. Anderson,S. Arcelli,A. Astbury,D. Axen,G. Azuelos,G. A. Bahan,J. T. M. Baines,A. H. Ball,J C Banks,R. J. Barlow,Susan W Barnett,J. R. Batley,G. Beaudoin,A. Beck,G. A. Beck, Julia C Becker,T. Behnke,K. W. Bell,G. Bella,P. Bentkowski,P. Berlich,Siegfried Bethke,O. Biebel,U. Binder,I. J. Bloodworth,P. Bock,B. Boden,H. M. Bosch,H. Breuker,P. Bright-Thomas,R. M. Brown,A. Buijs,H. J. Burckhart,C. Burgard,P. Capiluppi,R. K. Carnegie,A. A. Carter,J. R. Carter,C. Y. Chang,D. G. Charlton,S. L. Chu,P. E. L. Clarke,Ira M Cohen,J. C. Clayton,W. J. Collins,J. E. Conboy,M J Cooper,M. Coupland,M. Cuffiani,S. Dado,G. M. Dallavalle,S. De Jong,L. A. del Pozo,Hongyang Deng,A. Dieckmann,M. Dittmar,M. S. Dixit,E. do Coto e Silva,J. E. Duboscq,E. Duchovni,G. Duckeck,I. P. Duerdoth,D. J. P. Dumas,P. A. Elcombe,P. G. Estabrooks,E. Etzion,H. G. Evans,F. Fabbri,M. Fierro,M. Fincke-Keeler,H. M. Fischer,D. G. Fong,M. Foucher,A. Gaidot,O. Ganel,J. W. Gary,J. Gascon,R. F. McGowan,N. I. Geddes,C. Geich-Gimbel,S. W. Gensler,F. X. Gentit,G. Giacomelli,R. Giacomelli,V. Gibson,W. R. Gibson,J. D. Gillies,J. Goldberg,M. J. Goodrick,W. Gorn,C. Grandi,F. C. Grant,J. Hagemann,G. G. Hanson,M. Hansroul,C. K. Hargrove,P. F. Harrison,J C Hart,P. M. Hattersley,M. Hauschild,C. M. Hawkes,E. Heflin,R. J. Hemingway,R. D. Heuer,J. C. Hill,S. J. Hiller,T. Hilse,D. A. Hinshaw,J. D. Hobbs,P. R. Hobson,D. Hochman,R. J. Homer,A. K. Honma,R. E. Hughes-Jones,R. Humbert,P. Igo-Kemenes,H. Ihssen,D. C. Imrie,A. C. Janissen,A. Jawahery,P. W. Jeffreys,H. Jeremie,M. Jimack,M. Jobes,R. W. L. Jones,P. Jovanovic,C. Jui,D. Karlen,K. Kawagoe,T. Kawamoto,R. K. Keeler,R. G. Kellogg,B. W. Kennedy,S. Kluth,Toshio Kobayashi,D. S. Koetke,T. P. Kokott,S. Komamiya,L. Köpke,J. F. Kral,R. Kowalewski,J. von Krogh,J. Kroll,Michihiko Kuwano,P. Kyberd,G. D. Lafferty,R. Lahmann,F. Lamarche,J. G. Layter,P J Leblanc,A. M. Lee,M. H. Lehto,D. Lellouch,C. Leroy,J. Letts,S. Levegrün,L. Levinson,S. L. Lloyd,F. K. Loebinger,J. M. Lorah,B. Lorazo,M. J. Losty,X. C. Lou,J. Ludwig,M. Mannelli,S. Marcellini,G. Maringer,C. Markus,A. J. Martin,J. P. Martin,T. Mashimo,P. Mättig,U. Maur,J A Mckenna,T. J. McMahon,J. R. McNutt,F. Meijers,D. Menszner,F. S. Merritt,H. Mes,A. Michelini,R. P. Middleton,G. Mikenberg,J. Mildenberger,D. J. Miller,R. Mir,W. Mohr,Christian Moisan,A. Montanari,Toru Mori,M. Morii,T. Mouthuy,B. Nellen,H. H. Nguyen,Mitsuaki Nozaki,S. W. O'neale,F. G. Oakham,F. Odorici,H. O. Ogren,C. J. Oram,M. J. Oreglia,S. Orito,J. P. Pansart,B. Panzer-Steindel,P. Paschievici,G. N. Patrick,N. Paz-Jaoshvili,P. Pfister,J. E. Pilcher,J L Pinfold,D. Pitman,D. E. Plane,P. Poffenberger,B. Poli,A. Pouladdej,T. W. Pritchard,H. Przysiezniak,G. Quast,M. W. Redmond,D. L. Rees,G. E. Richards,D K Robinson,A. Rollnik,J. M. Roney,E. Ros,S. Rossberg,A. M. Rossi,M. Rosvick,P. Routenburg,K. Runge,O. Runolfsson,D. R. Rust,Masahiro Sasaki,C. Sbarra,A. D. Schaile,O. Schaile,W. Schappert,P. Scharff-Hansen,P. Schenk,B. Schmitt,H. von der Schmitt,Shaul Schreiber,C. Schwick,J. Schwiening,W. G. Scott,M. Settles,T. G. Shears,B. C. Shen,C. H. Shepherd-Themistocleous,P. Sherwood,R. Shypit,A. Simon,P P Singh,G. P. Siroli,A. Skuja,A. M. Smith,T. J. Smith,G. A. Snow,R. Sobie,R. W. Springer,M. Sproston,K. Stephens,J. Steuerer,R. Ströhmer,D. Strom,Tohru Takeshita,P. Taras,S. Tarem,M. Tecchio,P. Teixeira-Dias,N P Tesch,N. J. Thackray,M. A. Thomson,Emilio Torrentelujan,G. Transtromer,N. J. Tresilan,T. Tsukamoto,M. F. Turner,G. Tysarczyk-Niemeyer,D. Van den Plas,R. Van Kooten,G. J. VanDalen,G. Vasseur,C. J. Virtue,A. Wagner,D. L. Wagner,C. Wahl,J. P. Walker,C. P. Ward,D. R. Ward,P. M. Watkins,A. T. Watson,N. K. Watson,M. Weber,P. Weber,P. S. Wells,N. Wermes,M. A. Whalley,G. W. Wilson,J. A. Wilson,V.-H. Winterer,T. Wlodek,S A Wotton,T. R. Wyatt,R. Yaari,A. Yeaman,G. Yekutieli,M. Yurko,W. Zeuner,G. T. Zorn

European Physical Journal C（1993）

Cited 99|Views68

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Abstract

New measurements of the hadronic and leptonic cross sections and of the leptonic forward-backward asymmetries ine+e- collisions are presented. The analysis includes data recorded up to the end of 1991 by the OPAL experiment at LEP, with centre-of-mass energies within ±3 GeV of the Z0 mass. The results are based on a recorded total of 454 000 hadronic and 58 000 leptonic events. A model independent analysis of Z0 parameters based on an extension of the improved Born approximation is presented leading to test of lepton universality and an interpretation of the results within the Standard Model framework. The determination of the mass and width of the Z0 benefit from an improved understanding of the LEP energy calibration.

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Key words

Elementary Particle, Model Framework, Particle Acceleration, Precision Measurement, Opal Experiment

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