Experimental evidence for the non-Abelian nature of QCD from a study of multijet events produced in e+e- annihilation

I. H. Park, S. Schnetzer, J. Green, S. Sakamoto, F. Sannes, R. Stone, S. Trentalange, J. Vinson, A. Bacala, R. Imlay, P. Kirk, J. Lim, R. R. McNeil, W. Metcalf, C. P. Cheng, J. Li, Y. K. Li, Z. P. Mao, Y. T. Xu, Y. C. ZhuA. Abashian, K. Gotow, E. H. Low, M. E. Mattson, F. Naito, L. Piilonen, K. L. Sterner, S. Lusin, C. Rosenfeld, A. T.M. Wang, S. Wilson, M. Frautschi, H. Kagan, R. Kass, C. G. Trahern, Winston Ko, R. L. Lander, K. Maeshima, R. L. Malchow, J. R. Smith, K. Sparks, M. C.S. Williams, K. Abe, Y. Fujii, Y. Higashi, S. K. Kim, Y. Kurihara, A. Maki, T. Nozaki, T. Omori, H. Sagawa, Y. Sakai, Y. Sugimoto, Y. Takaiwa, S. Terada, K. Tsuchiya, F. Kajino, D. Perticone, R. Poling, T. Thomas, Y. Ishi, K. Miyano, H. Miyata, Y. Yamashita, D. Blanis, A. Bodek, H. Budd, R. Coombes, S. Eno, C. A. Fry, H. Harada, Y. H. Ho, Y. K. Kim, T. Kumita, T. Mori, S. L. Olsen, P. Perez, A. Sill, N. M. Shaw, E. H. Thorndike, K. Ueno, H. W. Zheng, K. Eguchi, H. Itoh, H. Ichinose, S. Kobayashi, A. Murakami, K. Toyoshima, J. S. Kang, H. J. Kim, M. H. Lee, S. S. Myung, G. N. Kim, E. J. Kim, D. Son, H. Kozuka, S. Matsumoto, T. Sasaki, T. Takeda, R. Tanaka, R. Chiba, S. Igarashi, H. Yokota, T. Ishizuka, K. Ohta

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Abstract

We present evidence for the non-Abelian nature of QCD from a study of multijet events produced in e+e- annihilations from s =50 to 57 GeV in the AMY detector at the KEK storage ring TRISTAN. A comparison of the three-jet event fraction at TRISTAN to the fraction of the DESY storage ring PETRA shows that the QCD coupling strength ±s decreases with increasing Q2. In addition, measurements of the angular distributions of four-jet events show evidence for the triple-gluon vertex.

Original languageEnglish (US)
Pages (from-to)1713-1716
Number of pages4
JournalPhysical review letters
Volume62
Issue number15
DOIs
StatePublished - 1989

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