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

34 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)295-302
ページ数8
ジャーナルZeitschrift für Physik C Particles and Fields
6
4
DOI
出版ステータスPublished - 1980 12
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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