Observation of a charge asymmetry in e+e- → μ+μ-

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

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Abstract

The angular distribution and the s dependence of the total cross section for the process e+e- → μ+μ- have been measured using the JADE detector at PETRA. After radiative corrections, a forward-backward asymmetry of -(11.8±3.8) % was observed at an average centre of mass energy of 33.5 GeV. For comparison, an asymmetry of -7.8 % is expected on the basis of the standard Glashow-Salam-Weinberg model.

Original languageEnglish
Pages (from-to)140-144
Number of pages5
JournalPhysics Letters B
Volume108
Issue number2
DOIs
Publication statusPublished - 1982 Jan 14
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Bartel, W., Cords, D., Dittmann, P., Eichler, R., Felst, R., Haidt, D., Krehbiel, H., Meier, K., Naroska, B., O'Neill, L. H., Steffen, P., Wenninger, H., Zhang, Y., Elsen, E., Petersen, A., Warming, P., Weber, G., Bethke, S., Drumm, H., ... Yanagisawa, C. (1982). Observation of a charge asymmetry in e+e- → μ+μ-. Physics Letters B, 108(2), 140-144. https://doi.org/10.1016/0370-2693(82)91160-1