Colour reconnection in $e^{+}e^{-} \rightarrow W^{+}W^{-}$ at $\sqrt{s}=189-209 GeV$

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

doi:10.1140/epjc/s2005-02439-x

Article
Report number	hep-ex/0508062 ; CERN-PH-EP-2005-035 ; CERN-PH-EP-2005-035
Title	Colour reconnection in $e^{+}e^{-} \rightarrow W^{+}W^{-}$ at $\sqrt{s}=189-209 GeV$
Related title	COLOR GEV
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	30
In:	Eur. Phys. J. C 45 (2006) 291-305
DOI	10.1140/epjc/s2005-02439-x
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LEP ; OPAL
Abstract	The effects of the final state interaction phenomenon known as colour reconnection are investigated at centre-of-mass energies in the range sqrt(s) 189-209 GeV using the OPAL detector at LEP. Colour reconnection is expected to affect observables based on charged particles in hadronic decays of W+W-. Measurements of inclusive charged particle multiplicities, and of their angular distribution with respect to the four jet axes of the events, are used to test models of colour reconnection. The data are found to exclude extreme scenarios of the Sjostrand-Khoze Type I (SK-I) model and are compatible with other models, both with and without colour reconnection effects. In the context of the SK-I model, the best agreement with data is obtained for a reconnection probability of 37%. Assuming no colour reconnection, the charged particle multiplicity in hadronically decaying W bosons is measured to be (nqqch) = 19.38+-0.05(stat.)+-0.08 (syst.).

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Email contact: [email protected]

Zapis kreiran 2005-08-31, zadnja izmjena 2025-06-06

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arXiv:hep-ex_0508062 -

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phep-2005-035 -

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