Prompt muons in multiparticle events from e+e- annihilation at petra

W. Bartel*, D. Cords, P. Dittmann, R. Eichler, R. Felst, D. Haidt, S. Kawabata, H. Krehbiel, B. Naroska, L. H. O'Neill, J. Olsson, P. Steffen, W. L. Yen, E. Elsen, M. Helm, A. Petersen, P. Warming, G. Weber, H. Drumm, J. HeintzeG. Heinzelmann, R. D. Heuer, J. von Krogh, P. Lennert, H. Matsumura, T. Nozaki, H. Rieseberg, A. Wagner, D. C. Darvill, F. Foster, G. Hughes, H. Wriedt, J. Allison, J. C.M. Armitage, A. H. Ball, I. P. Duerdoth, J. F. Hassard, B. T. King, F. K. Loebinger, A. A. Macbeth, H. McCann, H. E. Mills, P. G. Murphy, H. B. Prosper, K. Stephens, D. Clarke, M. C. Goddard, R. Marshall, G. F. Pearce, M. Imori, T. Kobayashi, S. Komamiya, M. Koshiba, M. Minowa, S. Orito, A. Sato, T. Suda, H. Takeda, Y. Totsuka, Y. Watanabe, S. Yamada, C. Yanagisawa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)


We have observed the production of prompt muons in e+e- annihilation in the centre of mass energy range 33.0 GeV to 35.8 GeV. The rate of such muons with momentum greater than 1.4 GeV was measured to be 0.069 ± 0.024 per multiparticle event. When compared with currently accepted models, this rate is consistent with that expected from charm and bottom decays, but does not support the production also of a top quark of mass less than about 15 GeV.

Original languageEnglish
Pages (from-to)277-280
Number of pages4
JournalPhysics Letters B
Issue number3
Publication statusPublished - 1981 Feb 19
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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