Measurement of αs using NLLA + O(α2S) in e+e- annihilation at √s = 58.0 GeV

D. Y. Kim, J. S. Kang, S. S. Myung, K. Abe, Y. Fujii, Y. Kurihara, M. H. Lee, A. Maki, T. Nozaki, T. Omori, H. Sagawa, Y. Sakai, T. Sasaki, Y. Sugimoto, Y. Takaiwa, S. Terada, P. Kirk, T. J. Wang, A. Abashian, K. GotowL. Piilonen, S. K. Choi, C. Rosenfeld, L. Y. Zheng, R. E. Breedon, Winston Ko, R. L. Lander, J. Rowe, S. L. Olsen, S. K. Sahu, S. Kanda, H. Miyata, K. Miyano, N. Nakajima, M. Satou, M. Shirai, N. Takashimizu, Y. Yamashita, S. Schnetzer, S. Kobayashi, A. Murakami, K. Ueno, S. K. Kim, H. J. Kim, H. S. Ahn, S. Y. Choi, S. Matsumoto, T. Kojima, T. Aso, S. Behari

Research output: Contribution to journalArticlepeer-review


A measurement of the strong coupling constant αs is presented using hadronic events produced in e+ e- annihilations at √s = 58.0 GeV from the AMY detector at TRISTAN. The measurement is based on comparisons of the distributions of thrust, heavy jet mass, total jet broadening, wide jet broadening, and energy-energy correlations with QCD calculations resummed up to next-to-leading-logarithms matched with the O(α2S) perturbative calculation. Combining the results of the individual evaluations, we find αS (58 GeV) = 0.132 ± 0.006.

Original languageEnglish
Pages (from-to)233-240
Number of pages8
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-2
Publication statusPublished - 1998 Feb 19
Externally publishedYes

Bibliographical note

Funding Information:
We thank the TRISTAN staff for the excellent operation of the storage ring. In addition we acknowledge the enthusiastic support provided by the staffs of our home institutions. We appreciate successful operation of the AMY detector which was retired in 1994 after nearly eight years of productive operation. This work has been supported by the Japan Ministry of Education, Science and Culture (Monbusho), the Japan Society for the Promotion of Science, the US Department of Energy, the US National Science Foundation, the Korean Science and Engineering Foundation, the Ministry of Education of Korea and the Academia Sinica of the People's Republic of China.

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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