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Production and muonic decay of heavy quarks ine + e − annihilation at 34.5 GeV

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Zeitschrift für Physik C Particles and Fields

Abstract

The production of prompt muons ine + e − annihilation has been studied at centre of mass energies near 34.5 GeV. The measured semi-muonic branching ratios ofb andc quarks areB(b»Xμv) =0.117±0.028±0.01 andB(c→Xμv)=0.082 ±0.012 +0.02a−0.01 . The fragmentation functions of heavy quarks are hard, <z b>=0.85 +0.10+0.02a−0.12–0.07 and <z c> =0.77 +0.05+0.03a−0.07–0.11 . Limits have been set on flavour changing neutral current decays:B(b→Xµ + µ −) <0.02 andB(b→Xµ + µ − (95% confidence level).

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Author notes

  1. W. Hillen

    Present address: Philips, Aachen, FRG

  2. N. Wermes

    Present address: SLAC, Stanford, CA, USA

  3. M. Wollstadt

    Present address: Lufthansa, Frankfurt, FRG

  4. Y. Eisenberg

    Present address: Weizmann Institute, Rehovot, Israel

  5. R. J. Nowak

    Present address: Warsaw University, Poland

  6. D. R. Quarrie

    Present address: FNAL, Batavia, IL, USA

  7. J. Proudfoot

    Present address: Argonne National Laboratory, Argonne, IL, USA

  8. P. L. Woodworth

    Present address: Institute of Oceanographic Sciences, Bidston, Merscyside, UK

Authors and Affiliations

  1. I. Physikalisches Institut der RWTH, D-5100, Aachen, Federal Republic of Germany

    M. Althoff, W. Braunschweig, F. J. Kirschfink, K. Lübelsmeyer, H. -U. Martyn, G. Peise, J. Rimkus, P. Rosskamp, H. G. Sander, D. Schmitz, H. Siebke & W. Wallraff

  2. Physikalisches Institut der Universität, D-5300, Bonn, Federal Republic of Germany

    H. M. Fischer, H. Hartmann, W. Hillen, W. Jocksch, G. Knop, L. Köpke, H. Kolanoski, H. Kück, R. Wedemeyer, N. Wermes & M. Wollstadt

  3. Deutsches Elektronen-Synchrotron, DESY, D-2000, Hamburg, Federal Republic of Germany

    Y. Eisenberg, K. Gather, H. Hultschig, P. Joos, W. Koch, U. Kötz, H. Kowalski, A. Ladage, B. Löhr, D. Lüke, P. Mättig, D. Notz, R. J. Nowak, J. Pyrlik, D. R. Quarrie, M. Rushton, W. Schütte, D. Trines, G. Wolf & Ch. Xiao

  4. II. Institut für Experimentalphysik der Universität, D-2000, Hamburg, Federal Republic of Germany

    R. Fohrmann, E. Hilger, T. Kracht, H. L. Krasemann, P. Leu, E. Lohrmann, D. Pandoulas, G. Poelz & B. H. Wiik

  5. Department of Physics, Imperial College, SW7 2BZ, London, England

    R. Beuselinck, D. M. Binnie, A. L. Campbell, P. J. Dornan, B. Foster, D. A. Garbutt, C. Jenkins, T. D. Jones, W. G. Jones, J. McCardle, J. K. Sedgbeer & W. A. T. Wan Abdullah

  6. Department of Nuclear Physics, Oxford University, OX1 3RH, England

    K. W. Bell, M. G. Bowler, P. Bull, R. J. Cashmore, P. E. L. Clarke, R. Devenish, P. Grossmann, C. M. Hawkes, S. L. Lloyd, G. L. Salmon, J. Thomas, T. R. Wyatt & C. Youngman

  7. Rutherford Appleton Laboratory, Chilton, OX11 OQX, Didcot, Oxon, England

    G. E. Forden, J. C. Hart, J. Harvey, D. K. Hasell, J. Proudfoot, D. H. Saxon & P. L. Woodworth

  8. Fachbereich Physik der Universität-Gesamthochschule, D-5900, Siegen, Federal Republic of Germany

    F. Barreiro, M. Dittmar, M. Holder & B. Neumann

  9. Weizmann Institute, Rehovot, Israel

    E. Duchovni, U. Karshon, G. Mikenberg, R. Mir, D. Revel, D. Ronat, A. Shapira & G. Yekutieli

  10. Department of Physics, University of Wisconsin, 53706, Madison, WI, USA

    T. Barklow, A. Caldwell, M. Cherney, J. M. Izen, M. Mermikides, G. Rudolph, D. Strom, H. Venkataramania, E. Wicklund, Sau Lan Wu & G. Zobernig

Authors
  1. M. Althoff
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  2. W. Braunschweig
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TASSO Collaboration

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a Supported by the Deutsches Bundesministerium für Forschung und Technologie

b Supported by the UK Science and Engineering Research Council

c Supported by the Minerva Gesellschaft für Forschung mbH

d Supported by the US Department of Energy contract WY-76-C-02-0881

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TASSO Collaboration., Althoff, M., Braunschweig, W. et al. Production and muonic decay of heavy quarks ine + e − annihilation at 34.5 GeV. Z. Phys. C - Particles and Fields 22, 219–229 (1984). https://doi.org/10.1007/BF01575783

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