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Determination of sin2 θweff using jet charge measurements in hadronic Z decays

  • D. Buskulic
  • , I. De Bonis
  • , D. Decamp
  • , P. Chez
  • , C. Goy
  • , J. P. Lees
  • , A. Lucotte
  • , M. N. Minard
  • , P. Odier
  • , B. Pietrzyk
  • , M. Chmeissani
  • , J. M. Crespo
  • , M. Delfino
  • , I. Efthymiopoulos
  • , E. Fernandez
  • , M. Fernandez-Bosman
  • , Ll Garrido
  • , A. Juste
  • , M. Martinez
  • , S. Orteu
  • A. Pacheco, C. Padilla, A. Pascual, J. A. Perlas, I. Riu, F. Sanchez, F. Teubert, A. Colaleo, D. Creanza, M. De Palma, G. Gelao, M. Girone, G. Iaselli, G. Maggi, M. Maggi, N. Marinelli, S. Nuzzo, A. Ranieri, G. Raso, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, G. Zito, X. Huang, J. Lin, Q. Ouyang, T. Wang, Y. Xie, R. Xu, S. Xue, J. Zhang, L. Zhang, W. Zhao, R. Alemany, A. O. Bazarko, G. Bonvicini, M. Cattaneo, P. Comas, P. Coyle, H. Drevermann, R. W. Forty, M. Frank, R. Hagelberg, J. Harvey, P. Janot, B. Jost, E. Kneringer, J. Knobloch, I. Lehraus, E. B. Martin, P. Mato, A. Minten, R. Miquel, Ll M. Mir, L. Moneta, T. Oest, F. Palla, J. R. Pater, J. F. Pusztaszeri, F. Ranjard, P. Rensing, L. Rolandi, D. Schlatter, M. Schmelling, O. Schneider, W. Tejessy, I. R. Tomalin, A. Venturi, H. Wachsmuth, A. Wagner, T. Wildish, Z. Ajaltouni, A. Barrès, C. Boyer, A. Falvard, P. Gay, C. Guicheney, P. Henrard, J. Jousset, B. Michel, S. Monteil, J. C. Montret, D. Pallin, P. Perret, F. Podlyski, J. Proriol, J. M. Rossignol, T. Fearnley, J. B. Hansen, J. D. Hansen, J. R. Hansen, P. H. Hansen, B. S. Nilsson, A. Wäänänen, A. Kyriakis, C. Markou, E. Simopoulou, I. Siotis, A. Vayaki, K. Zachariadou, A. Blondel, G. Bonneaud, J. C. Brient, P. Bourdon, A. Rougé, M. Rumpf, A. Valassi, M. Verderi, H. Videau, D. J. Candlin, M. I. Parsons, E. Focardi, G. Parrini, M. Corden, C. Georgiopoulos, D. E. Jaffe, A. Antonelli, G. Bencivenni, G. Bologna, F. Bossi, P. Campana, G. Capon, D. Casper, V. Chiarella, G. Felici, P. Laurelli, G. Mannocchi, F. Murtas, G. P. Murtas, L. Passalacqua, M. Pepe-Altarelli, L. Curtis, S. J. Dorris, A. W. Halley, L. G. Knowles, J. G. Lynch, V. O'Shea, C. Raine, P. Reeves, J. M. Scarr, K. Smith, I. Ten Have, A. S. Thompson, F. Thomson, S. Thorn, R. M. Turnbull, U. Becker, C. Geweniger, G. Graefe, P. Hanke, G. Hansper, V. Hepp, E. E. Kluge, A. Putzer, B. Rensch, M. Schmidt, J. Sommer, H. Stenzel, K. Tittel, S. Werner, M. Wunsch, D. Abbaneo, R. Beuselinck, D. M. Binnie, W. Cameron, P. J. Dornan, A. Moutoussi, J. Nash, J. K. Sedgbeer, A. M. Stacey, M. D. Williams, G. Dissertori, P. Girtler, D. Kuhn, G. Rudolph, C. K. Bowdery, P. Colrain, G. Crawford, A. J. Finch, F. Foster, G. Hughes, T. Sloan, E. P. Whelan, M. I. Williams, A. Galla, A. M. Greene, K. Kleinknècht, G. Quast, B. Renk, E. Rohne, H. G. Sander, P. Van Gemmeren, C. Zeitnitz, J. J. Aubert, A. M. Bencheikh, C. Benchouk, A. Bonissent, G. Bujosa, D. Calvet, J. Carr, C. Diaconu, F. Etienne, N. Konstantinidis, P. Payre, D. Rousseau, M. Talby, A. Sadouki, M. Thulasidas, K. Trabelsi, I. Abt, R. Assmann, C. Bauer, W. Blum, H. Dietl, F. Dydak, G. Ganis, C. Gotzhein, K. Jakobs, H. Kroha, G. Lütjens, G. Lutz, W. Männer, H. G. Moser, R. Richter, A. Rosado-Schlosser, S. Schael, R. Settles, H. Seywerd, R. St. Denis, W. Wiedenmann, G. Wolf, J. Boucrot, O. Callot, A. Cordier, M. Davier, L. Duflot, J. F. Grivaz, Ph Heusse, M. Jacquet, D. W. Kim, F. Le Diberder, J. Lefrançois, A. M. Lutz, I. Nikolic, H. J. Park, L. C. Park, M. H. Schune, S. Simion, J. J. Veillet, I. Videau, P. Azzurri, G. Bagliesi, G. Batignani, S. Bettarini, C. Bozzi, G. Calderini, M. Carpinelli, M. A. Ciocci, V. Ciulli, 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, G. Rizzo, G. Sanguinetti, A. Sciabà, P. Spagnolo, J. Steinberger, R. Tenchini, G. Tonelli, C. Vannini, P. G. Verdini, J. Walsh, A. P. Betteridge, G. A. Blair, L. M. Bryant, F. Cerutti, J. T. Chambers, Y. Gao, 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. Maley, 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, B. Marx, 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, A. M. Litke, M. A. McNeil, G. Taylor, C. N. Booth, R. Boswell, C. A.J. Brew, S. Cartwright, F. Combley, A. Koksal, M. Letho, W. M. Newton, J. Reeve, L. F. Thompson, A. Böhrer, S. Brandt, V. Büscher, G. Cowan, C. Grupen, G. Lutters, J. Minguet-Rodriguez, F. Rivera, P. Saraiva, L. Smolik, F. Stephan, M. Aleppo, M. Apollonio, L. Bosisio, R. Della Marina, G. Giannini, B. Gobbo, G. Musolino, F. Ragusa, J. Rothberg, S. Wasserbaech, S. R. Armstrong, L. Bellantoni, P. Elmer, Z. Feng, D. P.S. Ferguson, Y. S. Gao, S. González, J. Grahl, T. C. Greening, J. L. Harton, O. J. Hayes, H. Hu, P. A. McNamara, J. M. Nachtman, W. Orejudos, Y. B. Pan, Y. Saadi, M. Schmitt, I. J. Scott, V. Sharma, J. D. Turk, A. M. Walsh, Sau Lan Wu, X. Wu, J. M. Yamartino, M. Zheng, G. Zobernig
  • Université Paris-Sud
  • University of São Paulo
  • Florida State University
  • University of Barcelona
  • INFN Sezione di Bari
  • University of Salento
  • Institute of High Energy Physics, Chinese Academy of Sciences
  • European Organization for Nuclear Research
  • Wayne State University
  • c/o DESY
  • University of Manchester
  • Max-Planck-Institut für Kernphysik
  • Université Blaise Pascal
  • Niels Bohr Institutet
  • NCSR Demokritos
  • University of Edinburgh
  • University of Florence
  • LNF-INFN
  • University of Turin
  • Ev-K2-CNR Committee
  • University of Glasgow
  • University of Heidelberg
  • Imperial College London
  • University of Innsbruck
  • Lancaster University
  • Johannes Gutenberg University
  • Max-Planck-Institut für Physik
  • Laboratoire de l'Accélérateur Linéaire
  • Kangwon National University
  • University of Pisa
  • Dipartimento di Scienze Biomediche
  • Royal Holloway University of London
  • Rutherford Appleton Laboratory
  • Institut Pierre Simon Laplace, CNRS and CEA
  • University of California at Santa Cruz
  • The University of Sheffield
  • Universität Siegen
  • University of Trieste
  • University of Milano
  • University of Washington
  • University of Wisconsin-Madison
  • Fermi National Accelerator Laboratory
  • Cooperative Institute for Research in the Atmosphere
  • University of California, San Diego

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

16 Citations (Scopus)

Résumé

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 bb̄ and cc̄ 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 constrained by measurements of inclusive production of kaons, protons and Λ's. The separations are used to measure the electroweak mixing angle precisely as sin2 θweff = 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.

langue originaleAnglais
Pages (de - à)357-378
Nombre de pages22
journalZeitschrift fur Physik C-Particles and Fields
Volume71
Numéro de publication3
Les DOIs
étatPublié - 1 janv. 1996

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