Determination of A(FB)(b) using jet charge measurements in Z decays

6533b874fe1ef96bd12d61bf

RESEARCH PRODUCT

Determination of A(FB)(b) using jet charge measurements in Z decays

R. Barate D. Buskulic D. Decamp P. Ghez C. Goy J.-p. Lees A. Lucotte E. Merle M.-n. Minard J.-y. Nief B. Pietrzyk R. Alemany G. Boix M.p. Casado M. Chmeissani J.m. Crespo M. Delfino E. Fernandez M. Fernandez-bosman Ll. Garrido E. Graugès A. Juste M. Martinez G. Merino R. Miquel Ll.m. Mir I.c. Park A. Pascual J.a. Perlas I. Riu F. Sanchez A. Colaleo D. Creanza M. De Palma G. Gelao G. Iaselli G. Maggi M. Maggi S. Nuzzo A. Ranieri G. Raso F. Ruggieri G. Selvaggi L. Silvestris P. Tempesta A. Tricomi G. Zito X. Huang J. Lin Q. Ouyang T. Wang Y. Xie R. Xu S. Xue J. Zhang L. Zhang W. Zhao D. Abbaneo U. Becker P. Bright-thomas D. Casper M. Cattaneo V. Ciulli G. Dissertori H. Drevermann R.w. Forty M. Frank R. Hagelberg J.b. Hansen J. Harvey P. Janot B. Jost I. Lehraus P. Mato A. Minten L. Moneta A. Pacheco J.-f. Pusztaszeri F. Ranjard L. Rolandi D. Rousseau D. Schlatter M. Schmitt O. Schneider W. Tejessy F. Teubert I.r. Tomalin H. Wachsmuth Z. Ajaltouni F. Badaud G. Chazelle O. Deschamps A. Falvard C. Ferdi P. Gay C. Guicheney P. Henrard J. Jousset B. Michel S. Monteil J-c. Montret D. Pallin P. Perret F. Podlyski J. Proriol P. Rosnet J.d. Hansen J.r. Hansen P.h. Hansen B.s. Nilsson B. Rensch A. Wäänänen G. Daskalakis A. Kyriakis C. Markou E. Simopoulou I. Siotis A. Vayaki A. Blondel G. Bonneaud J.-c. Brient P. Bourdon A. Rougé M. Rumpf A. Valassi M. Verderi H. Videau E. Focardi G. Parrini K. Zachariadou M. Corden C. Georgiopoulos D.e. Jaffe A. Antonelli G. Bencivenni G. Bologna F. Bossi P. Campana G. Capon F. Cerutti V. Chiarella G. Felici P. Laurelli G. Mannocchi F. Murtas G.p. Murtas L. Passalacqua M. Pepe-altarelli L. Curtis A.w. Halley J.g. Lynch P. Negus V. O'shea C. Raine J.m. Scarr K. Smith P. Teixeira-dias A.s. Thompson E. Thomson O. Buchmüller S. Dhamotharan C. Geweniger G. Graefe P. Hanke G. Hansper V. Hepp E.e. Kluge A. Putzer J. Sommer K. Tittel S. Werner M. Wunsch R. Beuselinck D.m. Binnie W. Cameron P.j. Dornan M. Girone S. Goodsir E.b. Martin N. Marinelli A. Moutoussi J. Nash J.k. Sedgbeer P. Spagnolo M.d. Williams V.m. Ghete P. Girtler E. Kneringer D. Kuhn G. Rudolph A.p. Betteridge C.k. Bowdery P.g. Buck P. Colrain G. Crawford A.j. Finch F. Foster G. Hughes R.w.l. Jones N.a. Robertson M.i. Williams I. Giehl A.m. Greene C. Hoffmann K. Jakobs K. Kleinknecht G. Quast B. Renk E. Rohne H.-g. Sander P. Van Gemmeren C. Zeitnitz J.j. Aubert C. Benchouk A. Bonissent G. Bujosa J. Carr P. Coyle F. Etienne O. Leroy F. Motsch P. Payre M. Talby A. Sadouki M. Thulasidas K. Trabelsi M. Aleppo M. Antonelli F. Ragusa R. Berlich W. Blum V. Büscher H. Dietl G. Ganis H. Kroha G. Lütjens C. Mannert W. Männer H.-g. Moser S. Schael R. Settles H. Seywerd H. Stenzel W. Wiedenmann G. Wolf J. Boucrot O. Callot S. Chen A. Cordier M. Davier L. Duflot J.-f. Grivaz Ph. Heusse A. Höcker A. Jacholkowska D.w. Kim F. Le Diberder J. Lefrançois A.-m. Lutz M.-h. Schune E. Tournefier J.-j. Veillet I. Videau D. Zerwas P. Azzurri G. Bagliesi G. Batignani S. Bettarini T. Boccali C. Bozzi G. Calderini M. Carpinelli M.a. Ciocci R. Dell'orso R. Fantechi I. Ferrante L. Foà F. Forti A. Giassi M.a. Giorgi A. Gregorio F. Ligabue A. Lusiani P.s. Marrocchesi A. Messineo F. Palla G. Rizzo G. Sanguinetti A. Sciabà G. Sguazzoni R. Tenchini G. Tonelli C. Vannini A. Venturi P.g. Verdini G.a. Blair L.m. Bryant J.t. Chambers M.g. Green T. Medcalf P. Perrodo J.a. Strong J.h. Von Wimmersperg-toeller D.r. Botterill R.w. Clifft T.r. Edgecock S. Haywood P.r. Norton J.c. Thompson A.e. Wright B. Bloch-devaux P. Colas S. Emery W. Kozanecki E. Lançon M.-c. Lemaire E. Locci P. Perez J. Rander J.-f. Renardy A. Roussarie J.-p. Schuller J. Schwindling A. Trabelsi B. Vallage S.n. Black J.h. Dann R.p. Johnson H.y. Kim N. Konstantinidis A.m. Litke M.a. Mcneil G. Taylor C.n. Booth C.a.j. Brew S. Cartwright F. Combley M.s. Kelly M. Lehto J. Reeve L.f. Thompson K. Affholderbach A. Böhrer S. Brandt G. Cowan C. Grupen P. Saraiva L. Smolik F. Stephan M. Apollonio L. Bosisio R. Della Marina G. Giannini B. Gobbo G. Musolino J. Rothberg S. Wasserbaech S.r. Armstrong E. Charles P. Elmer D.p.s. Ferguson Y. Gao S. González T.c. Greening O.j. Hayes H. Hu S. Jin P.a. Mcnamara Iii J.m. Nachtman J. Nielsen W. Orejudos Y.b. Pan Y. Saadi I.j. Scott J. Walsh Sau Lan Wu X. Wu G. Zobernig

subject

Physics Nuclear and High Energy Physics Particle physics E+E-PHYSICS 010308 nuclear & particles physics LUND MONTE-CARLO media_common.quotation_subject Hadron 01 natural sciences Bottom quark Asymmetry Nuclear physics ALEPH Experiment 0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]High Energy Physics::Experiment Polar coordinate system FRAGMENTATION 010306 general physics Particle Physics - Experiment media_common

description

An improved measurement of the forward-backward asymmetry in Z --> b (b) over bar decays is presented, based on a sample of 4.1 million hadronic Z decays collected by ALEPH between 1991 and 1995. Data are analysed as a function of polar angle of the event axis and b purity. The event tagging efficiency and mean b-jet hemisphere charge are measured directly from data. From the measured forward-backward jet charge asymmetry, the b quark asymmetry at root s= m(Z) is determined to be: A(FB)(b) = 0.1017 +/- 0.0032(syst.) +/- 0.0032(syst.). In the context of the Standard Model this corresponds to a value of the effective weak mixing angle of sin(2) theta(W)(eff)= 0.23109 +/- 0.00096. (C) 1998 Published by Elsevier Science B.V, All rights reserved.

year	journal	country	edition	language
1998-01-01

10.1016/s0370-2693(98)00345-1 http://hdl.handle.net/11589/841