Differential three-jet cross section in e+e--annihilation and comparison with second-order predictions of QCD and abelian vector theory

W. Bartel*, D. Cords, G. Dietrich, P. Dittmann, R. Eichler, R. Felst, D. Haidt, H. Krehbiel, K. Meier, B. Naroska, L. H. O'Neill, P. Steffen, E. Elsen, A. Petersen, P. Warming, G. Weber, G. Kramer, G. Schierholz, S. Bethke, J. HeintzeG. Heinzelmann, K. H. Hellenbrand, R. D. Heuer, J. von Krogh, P. Lennert, S. Kawabata, S. Komamiya, 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, I. Glendinning, F. K. Loebinger, A. A. Macbeth, H. McCann, H. E. Mills, P. G. Murphy, P. Rowe, K. Stephens, D. Clarke, M. C. Goddard, R. Marshall, G. F. Pearce, J. Kanzaki, T. Kobayashi, M. Koshiba, M. Minowa, M. Nozaki, S. Odaka, S. Orito, A. Sato, H. Takeda, Y. Totsuka, Y. Watanabe, S. Yamada, C. Yanagisawa


研究成果: Article査読

31 被引用数 (Scopus)


Differential three-jet cross sections have been measured in e+e--annihilation at an average CM energy of 33.8 GeV and were compared to first- and second-order predictions of QCD and of a QED-like abelian vector theory. QCD provides a good description of the observed distributions. The inclusion of second-order effects reduced the observed quark-gluon coupling strength by about 20% to αS = 0.16 ± 0.015 (stat.) ± 0.03 (syst.). The abelian vector theory is found to be incompatible with the data.

ジャーナルPhysics Letters B
出版ステータスPublished - 1982 12 16

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学


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