A determination of αs in e+e- annihilation at s=57.3 GeV

Y. K. Li, H. Sagawa, A. Bodek, B. J. Kim, T. Kumita, C. Velisarris, R. Walker, K. Abe, R. E. Breedon, Y. Fujii, Y. Kurihara, F. Liu, A. Maki, T. Nozaki, T. Omori, Y. Sakai, T. Sasaki, Y. Sugimoto, Y. Takaiwa, S. TeradaP. Kirk, C. P. Cheng, W. X. Gao, W. G. Yan, M. H. Ye, A. Abashian, K. Gotow, M. E. Mattson, L. Piilonen, K. L. Sterner, S. Lusin, C. Rosenfeld, S. Wilson, L. Y. Zheng, C. A. Fry, R. Tanaka, L. M. Chinitz, Winston Ko, R. L. Lander, J. Rowe, J. R. Smith, D. Stuart, S. Kanda, S. L. Olsen, K. Ueno, S. K. Choi, F. Kajino, R. Poling, T. Thomas, T. Aso, K. Miyano, H. Miyata, M. Oyoshi, Y. Yamashita, S. Schnetzer, R. Stone, J. Vinson, S. Behari, S. Kobayashi, A. Murakami, S. K. Sahu, Y. S. Chung, J. S. Kang, D. Y. Kim, K. B. Lee, K. W. Park, S. K. Kim, M. H. Lee, S. S. Myung, D. Son, S. Ebara, S. Matsumoto, N. Takashimizu, T. Ishizuka

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We present a study of differential two jet ratios in multi-hadronic final states produced by e+e- annihilation in the AMY detector at TRISTAN. The data are compared to the predictions of the next-to-leading logarithm parton-shower (NLL PS) Monte Carlo and the O(αs2) matrix element QCD models. We determine the strong coupling strength αs(57.3 GeV) = 0.130 ± 0.006.

Original languageEnglish (US)
Pages (from-to)394-400
Number of pages7
JournalPhysics Letters B
Issue number1-2
StatePublished - Jul 27 1995

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