A measurement of the charmed quark asymmetry in e+e- annihilation

F. Ould-Saada, J. Allison, K. Ambrus, R. J. Barlow, W. Bartel, S. Bethke, C. K. Bowdery, S. L. Cartwright, J. Chrin, D. Clarke, A. Dieckmann, I. P. Duerdoth, G. Eckerlin, E. Elsen, R. Felst, A. J. Finch, F. Foster, T. Greenshaw, J. Hagemann, D. HaidtJ. Heintze, G. Heinzelmann, K. H. Hellenbrand, P. Hill, G. Hughes, H. Kado, K. Kawagoe, C. Kleinwort, G. Knies, T. Kobayashi, S. Komamiya, H. Krehbiel, J. v. Krogh, M. Kuhlen, F. K. Loebinger, A. A. Macbeth, N. Magnussen, R. Marshall, R. Meinke, R. P. Middleton, H. Minowa, P. G. Murphy, B. Naroska, J. M. Nye, J. Olsson, R. Ramcke, H. Rieseberg, D. Schmidt, L. Smolik, U. Schneekloth, J. A.J. Skard, J. Spitzer, P. Steffen, K. Stephens, A. Wagner, I. W. Walker, P. Warming, G. Weber, M. Zimmer, G. T. Zorn

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Abstract

The charmed quark charge asymmetry has been measured at the average centre of mass energy of 35 GeV with the JADE detector at the e+e- storage ring PETRA. Charmed quarks were identified by D tagging using the ΔM technique. D mesons were reconstructed through their decay into D0 mesons resulting in (Kπ) π and (K π π π) π final states. The measured charge asymmetry A=-0.149±0.067 is in agreement with the expectation from the electroweak interference effect in quantum flavour dynamics (QFD).

Original languageEnglish
Pages (from-to)567-571
Number of pages5
JournalZeitschrift für Physik C Particles and Fields
Volume44
Issue number4
DOIs
Publication statusPublished - Dec 1 1989
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Ould-Saada, F., Allison, J., Ambrus, K., Barlow, R. J., Bartel, W., Bethke, S., ... Zorn, G. T. (1989). A measurement of the charmed quark asymmetry in e+e- annihilation. Zeitschrift für Physik C Particles and Fields, 44(4), 567-571. https://doi.org/10.1007/BF01549079