Determination of sin^2(theta(eff)(w)) using jet charge measurements in hadronic Z decays

6533b834fe1ef96bd129e2c9

RESEARCH PRODUCT

Determination of sin^2(theta(eff)(w)) using jet charge measurements in hadronic Z decays

S. Orteu A. Sadouki R. Alemany S.r. Armstrong H. G. Moser L. Rolandi M.g. Schmidt Joseph Proriol R. Fantechi M. Apollonio P. Colas G. Sanguinetti M. Martinez Ramon Miquel A. S. Thompson P. R. Norton F. Teubert M. Wunsch L. Passalacqua Pierluigi Campana Dominique Pallin F. Combley H. Dietl I. Videau Peter Elmer D. Buskulic F. Murtas S. L. Cartwright E. P. Whelan D.p.s. Ferguson A. Ranieri Lorenzo Foà C. Benchouk J. P. Lees R. Richter Jiali Lin P. Maley M. Verderi A. M. Stacey M. Delfino M. Delfino C. Gotzhein C. Boyer R. M. Turnbull Karl Jakobs R W Assmann H.y. Kim Jie Zhang F. Ranjard M. Thulasidas G. Hansper J.t. Chambers B. Marx R. Beuselinck A. Böhrer Jorn Dines Hansen Philippe Odier Emmerich Kneringer M.d. Williams M. C. Lemaire Stephanie Brandt Paolo Spagnolo P. A. Mcnamara Yang Gao B. Jost Alberto Messineo P. Payre I. Siotis T. Wildish A. Moutoussi A. M. Bencheikh Giuseppe Iaselli Donato Creanza C. Guicheney G.a. Blair L. Bellantoni F. Forti M. A. Mcneil J. Boucrot Jordan Nash H. Videau M. Pepe-altarelli John T Harvey Alessandro Giassi D. Schlatter Giorgio Maggi Laurent Duflot Lester D.r. Thompson R. Boswell Stefan Simion A. Wagner J. J. Veillet D. W. Kim Giuseppe Raso J. F. Pusztaszeri Y. Saadi L. Moneta P. Henrard A. Lusiani Ziad Ajaltouni A. Bonissent A. Bonissent G. Rudolph M. Letho M. Chmeissani R. Hagelberg A. M. Lutz G. Bonvicini G. Bencivenni J.m. Yamartino M. N. Minard S. Bettarini Mossadek Talby M. Rumpf Jean-francois Grivaz J. A. Perlas Georg Zobernig D. Kuhn Nancy Marinelli K. Trabelsi Philippe Ghez J. J. Walsh P. Saraiva J. K. Sedgbeer I. Nikolic I. G. Knowles R. Xu Sau Lan Wu P. Van Gemmeren I. Ferrante P. Mato B. Gobbo P. J. Dornan G. Lutters B.s. Nilsson Joseph Rothberg G. Lutz C. K. Bowdery F. Thomson M. G. Green Franco Ligabue Salvatore Nuzzo G. Batignani A. Cordier F. Foster J. P. Schuller Fabrizio Palla M. Davier J.d. Hansen I. Lehraus P. Bourdon F. Sanchez T. Oest A.e. Wright Z. Y. Feng P. Colrain Duccio Abbaneo Kevin M. Smith Guido Tonelli F. Stephan A. Pacheco T. Medcalf W. Zhao J. F. Renardy Elizabeth Locci M. I. Williams C. Vannini J. Minguet-rodriguez G. R. Bonneaud L. Smolik F. Rivera M. Zheng Marco Cattaneo G. Hughes Gerardo Ganis F. Le Diberder A. J. Finch Markus Frank A. Blondel Werner Wiedenmann B. Vallage G. Mannocchi Jane Nachtman A. Roussarie Hasko Stenzel T. Fearnley M. Corden J. M. Crespo M. Jacquet G. Parrini S. Xue Maria Agnese Ciocci A. Trabelsi D. J. Candlin G. Bologna Ph. Heusse Roger Forty Giuseppe Zito J. Steinberger C. Markou P. Girtler A. M. Walsh Q. Ouyang R. Della Marina M. Carpinelli D. M. Binnie Nikolaos Konstantinidis Ettore Focardi Ettore Focardi John Rander P. Rensing D. R. Botterill G. Bujosa J. Reeve I.j. Scott A. Pascual I. Efthymiopoulos G. B. Taylor P. Tempesta A. Antonelli J. C. Thompson Y. B. Pan T. R. Edgecock H. Seywerd H. Hu I. Abt I. C. Park H.j. Park Lei Zhang A. Koksal Francesco Ragusa Francesco Ragusa Roberto Tenchini E. Rohne J. M. Rossignol A. M. Greene B. Renk Roberto Dell'orso Jørgen Beck Hansen C. Georgiopoulos J. M. Scarr Patrick Janot G. Musolino E. Fernandez V. Hepp André Rougé Mario Giorgi H. G. Sander G.p. Murtas D. Decamp H. Wachsmuth Andrea Venturi Val O'shea S.n. Black I. De Bonis Joleen Pater Mi Parsons Ll. Garrido A. Galla J-c. Montret B. Pietrzyk G. Graefe Stephen Haywood Giovanna Selvaggi O. Schneider A. Wäänänen W. Cameron J.h. Von Wimmersperg-toeller G. Lütjens Imma Riu J. Sommer A.o. Bazarko P. S. Marrocchesi Fabio Cerutti R. W. Clifft L. Bosisio Y. S. Gao W. M. Newton J. Knobloch W. Orejudos J. Schwindling Christian Zeitnitz R. P. Johnson Paolo Azzurri Günther Dissertori P. Perret A. Vayaki J.g. Lynch Anna Colaleo R. St. Denis J. Lefrançois P. Comas C. Geweniger M. De Palma G. Felici A. Valassi Lucia Silvestris A. Barres U. Becker J. Grahl E. E. Kluge D. E. Jaffe C. Bauer A. W. Halley T.c. Greening Alain Falvard J. C. Brient Ting-chi Wang G. Giannini Hubert Kroha Yuehong Xie P. Perrodo Giuseppe Bagliesi F. Dydak Vitaliano Ciulli David Rousseau Pablo Rodriguez Perez C. Grupen Maria Girone S. Gonzalez K. Tittel Konrad Kleinknecht Paul Hanke Arnaud Lucotte S. Schael C. N. Booth H. Drevermann J. Jousset Michael Schmitt W. Tejessy S. Wasserbaech S. Werner G. Rizzo Ian R Tomalin Eric Lancon J.h. Dann Jd Turk Piero Giorgio Verdini B. Michel M. Aleppo T. J. Sloan Gy. Wolf G. A. Cowan S. J. Dorris X. Huang Paolo Laurelli W. Blum J. J. Aubert J. J. Aubert O. Callot J. Carr W. Kozanecki Aristotelis Kyriakis Ll.m. Mir Andrea Sciabà M. H. Schune W. Männer C. Goy Vivek Sharma A. Gregorio A. Rosado-schlosser Alan M. Litke Mario Maggi C. Raine S. Monteil J. L. Harton K. Zachariadou G. Calderini Christopher Brew V. Büscher F. Ruggieri G. Capon A. Juste Gunter Quast I. Ten Have Xin Wu A. Minten G. Crawford P. H. Hansen D. Casper P. Coyle G. Gelao E. Simopoulou David Calvet S. Thorn P. Reeves L. M. Bryant M. Schmelling C. Padilla B. Rensch A. P. Betteridge Vitaliano Chiarella F. Bossi A. Putzer E. B. Martin F. Podlyski S. Emery Cristinel Diaconu B. Bloch-devaux J.a. Strong F. Etienne O.j. Hayes R. Settles C. Bozzi L. Curtis M. Fernandez-bosman

subject

Physics Quark Particle physics Physics and Astronomy (miscellaneous)010308 nuclear & particles physics Physics Electroweak interaction Hadron High Energy Physics::Phenomenology Charge (physics)Jet (particle physics)01 natural sciences Nuclear physics ALEPH Experiment 0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]High Energy Physics::Experiment 010306 general physics ALEPH experiment Mixing (physics)Particle Physics - Experiment Bar (unit)

description

The electroweak mixing angle is determined with high precision from measurements of the mean difference between forward and backward hemisphere charges in hadronic decays of the Z. A data sample of 2.5 million hadronic Z decays recorded over the period 1990 to 1994 in the ALEPH detector at LEP is used. The mean charge separation between event hemispheres containing the original quark and antiquark is measured for b (b) over bar and c (c) over bar events in subsamples selected by their long lifetimes or using fast D*'s. The corresponding average charge separation for light quarks is measured in an inclusive sample from the anticorrelation between charges of opposite hemispheres and agrees with predictions of hadronisation models with a precision of 2%. It is shown that differences between light quark charge separations and the measured average can be determined using hadronisation models, with systematic uncertainties con strained by measurements of inclusive production of kaons, protons and Lambda's. The separations are used to measure the electroweak mixing angle precisely as sin(2) theta(w)(eff) = 0.2322 +/- 0.0008(exp. stat.) +/-0.0007(exp. syst.) +/- 0.0008(sep.). The first two errors are due to purely experimental sources whereas the third stems from uncertainties in the quark charge separations. RI ANTONELLI, ANTONELLA/C-6238-2011; Passalacqua, Luca/F-5127-2011; Murtas, Fabrizio/B-5729-2012; St.Denis, Richard/C-8997-2012; Sanchez, Federico/F-5809-2012; Forti, Francesco/H-3035-2011; Ferrante, Isidoro/F-1017-2012

year	journal	country	edition	language
1996-01-01

10.1007/bf02906996 http://hdl.handle.net/11365/38796