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A measurement of the charmed quark asymmetry ine + e − annihilation

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Zeitschrift für Physik C Particles and Fields

Abstract

The charmed quark charge asymmetry has been measured at the average centre of mass energy of 35 GeV with the JADE detector at thee + e − storage ring PETRA. Charmed quarks were identified byD *± tagging using the ΔM technique.D *± mesons were reconstructed through their decay intoD 0 mesons resulting in (Kπ) π and (K π π π) π final states. The measured charge asymmetryA=−0.149±0.067 is in agreement with the expectation from the electroweak interference effect in quantum flavour dynamics (QFD).

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Author information

Author notes

  1. K. Ambrus

    Present address: MBB, Munich, FRG

  2. S. Bethke

    Present address: LBL, Berkeley, Calif., USA

  3. S. L. Cartwright & U. Schneekloth

    Present address: MIT, Cambridge, Mass., USA

  4. K. H. Hellenbrand

    Present address: Universität des Saarlandes, Saarbrücken, FRG

  5. H. Kado

    Present address: Bayer AG, Brunsbüttel, FRG

  6. S. Komamiya

    Present address: SLAC, Calif., USA

  7. M. Kuhlen

    Present address: CALTECH, Calif., USA

  8. N. Magnussen & D. Schmidt

    Present address: Universität-Gesamthochschule, Wuppertal, FRG

  9. J. A. J. Skard

    Present address: ST Systems Corporation, Lanham, M, USA

  10. J. Spitzer

    Present address: MPI, Heidelberg, FRG

  11. P. Warming

    Present address: Digitec, Hamburg, FRG

Authors and Affiliations

  1. Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany

    W. Bartel, R. Felst, D. Haidt, P. Hill, H. Kado, G. Knies, H. Krehbiel, N. Magnussen, R. Meinke, B. Naroska, J. Olsson, R. Ramcke, D. Schmidt & P. Steffen

  2. II. Institut für Experimentalphysik der Universität Hamburg, Hamburg, Germany

    F. Ould-Saada, T. Greenshaw, J. Hagemann, G. Heinzelmann, C. Kleinwort, M. Kuhlen, U. Schneekloth, P. Warming & G. Weber

  3. Physikalisches Institut der Universität Heidelberg, Heidelberg, Germany

    K. Ambrus, S. Bethke, A. Dieckmann, G. Eckerlin, E. Elsen, J. Heintze, K. H. Hellenbrand, S. Komamiya, J. v. Krogh, H. Rieseberg, L. Smolik, J. Spitzer, A. Wagner & M. Zimmer

  4. University of Lancaster, Lancaster, England

    C. K. Bowdery, A. J. Finch, F. Foster, G. Hughes, J. M. Nye & I. W. Walker

  5. University of Manchester, Manchester, England

    J. Allison, R. J. Barlow, J. Chrin, I. P. Duerdoth, F. K. Loebinger, A. A. Macbeth, P. G. Murphy & K. Stephens

  6. University of Maryland, College Park, MD, USA

    J. A. J. Skard & G. T. Zorn

  7. Rutherford Appleton Laboratory, Chilton, Didcot, England

    S. L. Cartwright, D. Clarke, R. Marshall & R. P. Middleton

  8. International Center for Elementary Particle Physics, University of Tokyo, Tokyo, Japan

    K. Kawagoe, T. Kobayashi & H. Minowa

Authors
  1. F. Ould-Saada
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  2. J. Allison
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JADE Collaboration

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JADE Collaboration., Ould-Saada, F., Allison, J. et al. A measurement of the charmed quark asymmetry ine + e − annihilation. Z. Phys. C - Particles and Fields 44, 567–571 (1989). https://doi.org/10.1007/BF01549079

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  • DOI: https://doi.org/10.1007/BF01549079

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