CERN Accelerating science

Article
Report number hep-ex/0312043 ; CERN-EP-2003-082 ; CERN-EP-2003-082
Title Measurement of the partial widths of the Z into up- and down-type quarks
Author(s)

Abbiendi, G. ; Ainsley, C. ; Akesson, P.F. ; Alexander, G. ; Allison, John ; Amaral, P. ; Anagnostou, G. ; Anderson, K.J. ; Arcelli, S. ; Asai, S. ; Axen, D. ; Azuelos, G. ; Bailey, I. ; Barberio, E. ; Barillari, T. ; Barlow, R.J. ; Batley, R.J. ; Bechtle, P. ; Behnke, T. ; Bell, Kenneth Watson ; Bell, P.J. ; Bella, G. ; Bellerive, A. ; Benelli, G. ; Bethke, S. ; Biebel, O. ; Boeriu, O. ; Bock, P. ; Boutemeur, M. ; Braibant, S. ; Brigliadori, L. ; Brown, Robert M. ; Buesser, K. ; Burckhart, H.J. ; Campana, S. ; Carnegie, R.K. ; Carter, A.A. ; Carter, J.R. ; Chang, C.Y. ; Charlton, D.G. ; Ciocca, C. ; Csilling, A. ; Cuffiani, M. ; Dado, S. ; De Roeck, A. ; De Wolf, E.A. ; Desch, K. ; Dienes, B. ; Donkers, M. ; Doucet, M. ; Dubbert, J. ; Duchovni, E. ; Duckeck, G. ; Duerdoth, I.P. ; Etzion, E. ; Fabbri, F. ; Feld, L. ; Ferrari, P. ; Fiedler, F. ; Fleck, I. ; Ford, M. ; Frey, A. ; Gagnon, P. ; Gary, John William ; Gaycken, G. ; Geich-Gimbel, C. ; Giacomelli, G. ; Giacomelli, P. ; Giunta, Marina ; Goldberg, J. ; Gross, E. ; Grunhaus, J. ; Gruwe, M. ; Gunther, P.O. ; Gupta, A. ; Hajdu, C. ; Hamann, M. ; Hanson, G.G. ; Harel, A. ; Hauschild, M. ; Hawkes, C.M. ; Hawkings, R. ; Hemingway, R.J. ; Herten, G. ; Heuer, R.D. ; Hill, J.C. ; Hoffman, Kara Dion ; Horvath, D. ; Huntemeyer, P. ; Igo-Kemenes, P. ; Ishii, K. ; Jeremie, H. ; Jovanovic, P. ; Junk, T.R. ; Kanaya, N. ; Kanzaki, J. ; Karlen, D. ; Kawagoe, K. ; Kawamoto, T. ; Keeler, R.K. ; Kellogg, R.G. ; Kennedy, B.W. ; Klein, K. ; Klier, A. ; Kluth, S. ; Kobayashi, T. ; Kobel, M. ; Komamiya, S. ; Kramer, T. ; Krieger, P. ; von Krogh, J. ; Kruger, K. ; Kuhl, T. ; Kupper, M. ; Lafferty, G.D. ; Landsman, H. ; Lanske, D. ; Layter, J.G. ; Lellouch, D. ; Lettso, J. ; Levinson, L. ; Lillich, J. ; Lloyd, S.L. ; Loebinger, F.K. ; Lu, J. ; Ludwig, A. ; Ludwig, J. ; Mader, W. ; Marcellini, S. ; Martin, A.J. ; Masetti, G. ; Mashimo, T. ; Mattig, Peter ; McKenna, J. ; McPherson, R.A. ; Meijers, F. ; Menges, W. ; Merritt, F.S. ; Mes, H. ; Michelini, A. ; Mihara, S. ; Mikenberg, G. ; Miller, D.J. ; Moed, S. ; Mohr, W. ; Mori, T. ; Mutter, A. ; Nagai, K. ; Nakamura, I. ; Nanjo, H. ; Neal, H.A. ; Nisius, R. ; O'Neale, S.W. ; Oh, A. ; Okpara, A. ; Oreglia, M.J. ; Orito, S. ; Pahl, C. ; Pasztor, G. ; Pater, J.R. ; Pilcher, J.E. ; Pinfold, J. ; Plane, David E. ; Poli, B. ; Pooth, O. ; Przybycien, M. ; Quadt, A. ; Rabbertz, K. ; Rembser, C. ; Renkel, P. ; Roney, J.M. ; Rosati, S. ; Rozen, Y. ; Runge, K. ; Sachs, K. ; Saeki, T. ; Sarkisyan, E.K.G. ; Schaile, A.D. ; Schaile, O. ; Scharff-Hansen, P. ; Schieck, J. ; Schoerner-Sadenius, Thomas ; Schroder, Matthias ; Schumacher, M. ; Scott, W.G. ; Seuster, R. ; Shears, T.G. ; Shen, B.C. ; Sherwood, P. ; Skuja, A. ; Smith, A.M. ; Sobie, R. ; Soldner-Rembold, S. ; Spano, F. ; Stahl, A. ; Strom, David M. ; Strohmer, R. ; Tarem, S. ; Tasevsky, M. ; Teuscher, R. ; Thomson, M.A. ; Torrence, E. ; Toya, D. ; Tran, P. ; Trigger, I. ; Trocsanyi, Z. ; Tsur, E. ; Turner-Watson, M.F. ; Ueda, I. ; Ujvari, B. ; Vollmer, C.F. ; Vannerem, P. ; Vertesi, R. ; Verzocchi, M. ; Voss, H. ; Vossebeld, J. ; Waller, D. ; Ward, C.P. ; Ward, D.R. ; Watkins, P.M. ; Watson, A.T. ; Watson, N.K. ; Wells, P.S. ; Wengler, T. ; Wermes, N. ; Wetterling, D. ; Wilson, G.W. ; Wilson, J.A. ; Wolf, G. ; Wyatt, T.R. ; Yamashita, S. ; Zer-Zion, D. ; Zivkovic, Lidija

Affiliation (School of Phys. and Astronomy, Univ. Birmingham) ; (Dipartimento di Fis. dell Univ. Bologna and INFN) ; (Phys. Institut, Univ. Bonn) ; (Department of Phys., Univ. California) ; (Cavendish Laboratory, Cambridge) ; (Ottawa-Carleton Inst. for Phys., Department of Phys., Carleton Univ.) ; (CERN) ; (Enrico Fermi Institute and Department of Phys., Univ. Chicago) ; (Fakultat fur Phys., Albert Ludwigs Univ., Freiburg) ; (Phys. Institut, Univ. Heidelberg) ; (Indiana Univ., Department of Phys.) ; (Queen Mary and Westfield College, Univ. London,) ; (Technische Hochschule Aachen, III Phys. Institut, Aachen) ; (Univ. College London) ; (Department of Phys., Schuster Laboratory, Manchester) ; (Department of Phys., University of Maryland) ; (Laboratoire de Phys. Nucl., Univ. Montreal) ; (Univ. Oregon, Department of Phys.) ; (CLRC Rutherford Appleton Laboratory) ; (Department of Phys., Technion-Israel Institute of Technology) ; (Department of Phys. and Astronomy, Tel Aviv Univ.) ; (Int. Centre for Elementary Particle Phys. and Dept. of Phys., Univ. Tokyo) ; (Kobe Univ.) ; (Particle Phys. Department, Weizmann Institute of Science) ; (Univ. Hamburg/DESY) ; (Univ. Victoria, Department of Physics) ; (University of British Columbia, Department of Phys.) ; (Univ. Alberta, Department of Phys.) ; (Research Institute for Particle and Nucl. Phys., Budapest) ; (Institute of Nucl. Research, Hungary) ; (Ludwigs-Maximilians-Univ. Munchen) ; (Max-Planck-Institut fur Physik, Munich) ; (Yale Univ., Department of Phys.) ; (TRIUMF)
Publication 2004
Imprint 28 Nov 2003
Number of pages 23
Note 22 pages, 5 figures, Submitted to Phys. Letts. B Report-no: CERN-EP/2003-082
In: Phys. Lett. B 586 (2004) 167-182
DOI 10.1016/j.physletb.2004.02.046
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LEP ; OPAL
Abstract Using the entire OPAL LEP1 on-peak Z hadronic decay sample, Z -> qbarq gamma decays were selected by tagging hadronic final states with isolated photon candidates in the electromagnetic calorimeter. Combining the measured rates of Z -> qbarq gamma decays with the total rate of hadronic Z decays permits the simultaneous determination of the widths of the Z into up- and down-type quarks. The values obtained, with total errors, were Gamma u = 300 ^{+19}_{-18} MeV and Gamma d = 381 ^{+12}_{-12} MeV. The results are in good agreement with the Standard Model expectation.
Copyright/License Elsevier B.V.
Preprint: (License: CC-BY-4.0)

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 Record creato 2003-12-15, modificato l'ultima volta il 2021-10-29


Testo completo:
arXiv:hep-ex_0312043 - Scarica documentoPDF
ep-2003-082 - Scarica documentoPDF
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