Search for fractional charge and heavy stable particles at PETRA

W. Bartel*, T. Canzler, 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. DrummJ. Heintze, G. Heinzelmann, R. D. Heuer, J. von Krogh, P. Lennert, H. Matsumura, T. Nozaki, H. Riesenberg, A. Wagner, D. C. Darwill, F. Foster, G. Hughes, H. Wriedt, J. Allison, A. H. Ball, I. Duerdoth, J. Hassard, F. Loebinger, H. McCann, B. King, A. Macbeth, H. Mills, P. G. Murphy, H. 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


研究成果: Article査読

1 被引用数 (Scopus)


A search has been made for new particles with charge Q=2/3, 1, 4/3, 5/3 produced in e+e--reactions at PETRA. The energy range was Ecm=27-35 GeV. No such particles were found. Upper limits for the cross-section depending on the assumed mass and production spectrum are given. For Q=2/3 quarks with mass less than 12 GeV/c2, upper limits {Mathematical expression} (90% C.L.) are obtained both for inclusive and exclusive production. For the lifetime of the B-meson (mB=5GeV/c2) an upper limit τ≦2×10-9s is obtained.

ジャーナルZeitschrift für Physik C Particles and Fields
出版ステータスPublished - 1980 12月

ASJC Scopus subject areas

  • 物理学および天文学(その他)


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