CERN Accelerating science

Article
Report number hep-ex/0508060 ; OPAL-PR-410 ; CERN-PH-EP-2005-038 ; CERN-PH-EP-2005-038
Title Measurement of the mass and width of the W boson
Author(s)

Abbiendi, G. ; Ainsley, C. ; Akesson, P.F. ; Alexander, G. ; Anagnostou, G. ; Anderson, K.J. ; Asai, S. ; Axen, D. ; 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. ; Brown, Robert M. ; Burckhart, H.J. ; Campana, S. ; Capiluppi, P. ; 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. ; Dubbert, J. ; Duchovni, E. ; Duckeck, G. ; Duerdoth, I.P. ; Etzion, E. ; Fabbri, F. ; Ferrari, P. ; Fiedler, F. ; Fleck, I. ; Ford, M. ; Frey, A. ; Gagnon, P. ; Gary, John William ; 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. ; Horvath, D. ; Igo-Kemenes, P. ; Ishii, K. ; Jeremie, H. ; Jovanovic, P. ; Junk, T.R. ; Kanzaki, J. ; Karlen, D. ; Kawagoe, K. ; Kawamoto, T. ; Keeler, R.K. ; Kellogg, R.G. ; Kennedy, B.W. ; Kluth, S. ; Kobayashi, T. ; Kobel, M. ; Komamiya, S. ; Kramer, T. ; Krasznahorkay, A. ; Krieger, P. ; von Krogh, J. ; Kuhl, T. ; Kupper, M. ; Lafferty, G.D. ; Landsman, H. ; Lanske, D. ; Lellouch, D. ; Letts, J. ; Levinson, L. ; Lillich, J. ; Lloyd, S.L. ; Loebinger, F.K. ; Lu, J. ; Ludwig, A. ; Ludwig, J. ; Mader, W. ; Marcellini, S. ; Martin, A.J. ; Mashimo, T. ; Mattig, Peter ; McKenna, J. ; McPherson, R.A. ; Meijers, F. ; Menges, W. ; Merritt, F.S. ; Mes, H. ; Meyer, Niels T. ; Michelini, A. ; Mihara, S. ; Mikenberg, G. ; Miller, D.J. ; Mohr, W. ; Mori, T. ; Mutter, A. ; Nagai, K. ; Nakamura, I. ; Nanjo, H. ; Neal, H.A. ; Nisius, R. ; O'Neale, S.W. ; Oh, A. ; Oreglia, M.J. ; Orito, S. ; Pahl, C. ; Pasztor, G. ; Pater, J.R. ; Pilcher, J.E. ; Pinfold, J. ; Plane, David E. ; Pooth, O. ; Przybycien, M. ; Quadt, A. ; Rabbertz, K. ; Rembser, C. ; Renkel, P. ; Roney, J.M. ; Rossi, A.M. ; Rozen, Y. ; Runge, K. ; Sachs, K. ; Saeki, T. ; Sarkisyan, E.K.G. ; Schaile, A.D. ; Schaile, O. ; Scharff-Hansen, P. ; Schieck, J. ; Schorner-Sadenius, T. ; Schroder, Matthias ; Schumacher, M. ; 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. ; Ward, C.P. ; Ward, D.R. ; Watkins, P.M. ; Watson, A.T. ; Watson, N.K. ; Wells, P.S. ; Wengler, T. ; Wermes, N. ; Wilson, G.W. ; Wilson, J.A. ; Wolf, G. ; Wyatt, T.R. ; Yamashita, S. ; Zer-Zion, D. ; Zivkovic, Lidija

Affiliation (CERN) ; (School of Physics and Astronomy, University of Birmingham) ; (Dipartimento di Fisica dell Universita di Bologna and INFN) ; (Physikalisches Institut, Universitat Bonn) ; (Department of Physics, University of California) ; (Cavendish Laboratory, Cambridge) ; (Ottawa-Carleton Institute for Physics, Department of Physics, Carleton University) ; (Enrico Fermi Institute and Department of Physics, University of Chicago) ; (Fakultat fur Physik, Albert Ludwigs Universitat, Freiburg) ; (Physikalisches Institut, Universitat Heidelberg) ; (Indiana University, Department of Physics) ; (Queen Mary and Westfield College, University of London,) ; (Technische Hochschule Aachen, III Physikalisches Institut, Aachen) ; (University College London) ; (Department of Physics, Schuster Laboratory, Manchester) ; (Department of Physics, University of Maryland) ; (Laboratoire de Physique Nucleaire, Universite de Montreal) ; (University of Oregon, Department of Physics) ; (CLRC Rutherford Appleton Laboratory) ; (Department of Physics, Technion-Israel Institute of Technology) ; (Department of Physics and Astronomy, Tel Aviv University) ; (International Centre for Elementary Particle Physics and Department of Physics, University of Tokyo) ; (Kobe University) ; (Particle Physics Department, Weizmann Institute of Science) ; (Universitat Hamburg/DESY) ; (University of Victoria, Department of Physics) ; (University of British Columbia, Department of Physics) ; (University of Alberta, Department of Physics) ; (Research Institute for Particle and Nuclear Physics, Budapest) ; (Institute of Nuclear Research, Hungary) ; (Ludwigs-Maximilians-Universitat Munchen) ; (Max-Planck-Institut fur Physik, Munich) ; (Yale University,Department of Physics) ; (TRIUMF)
Publication 2006
Imprint 15 Jul 2005
Number of pages 49
Note This paper is dedicated to the memory of Steve O'Neale
This paper is dedicated to the memory of Steve O'Neale
In: Eur. Phys. J. C 45 (2006) 307-335
DOI 10.1140/epjc/s2005-02440-5
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LEP ; OPAL
Abstract The mass and width of the W boson are measured using e+e- -> W+W- events from the data sample collected by the OPAL experiment at LEP at centre-of-mass energies between 170 GeV and 209 GeV. The mass (mw) and width (gw) are determined using direct reconstruction of the kinematics of W+W- -> qqbarlv and W+W- -> qqbarqqbar events. When combined with previous OPAL measurements using W+W- -> lvlv events and the dependence on mw of the WW production cross-section at threshold, the results are determined to be mw = 80.415 +- 0.042 +- 0.030 +- 0.009 GeV gw = 1.996 +- 0.096 +- 0.102 +- 0.003 GeV where the first error is statistical, the second systematic and the third due to uncertainties in the value of the LEP beam energy. By measuring mw with several different jet algorithms in the qqbarqqbar channel, a limit is also obtained on possible final-state interactions due to colour reconnection effects in W+W- -> qqbarqqbar events. The consistency of the results for the W mass and width with those inferred from other electroweak parameters provides an important test of the Standard Model of electroweak interactions

Corresponding record in: Inspire
Email contact: [email protected] ; [email protected]


 Registre creat el 2005-08-30, darrera modificació el 2024-06-13


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