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Charged-particle multiplicities in e + e − annihilations at s</mml:mi…

1990; American Physical Society; Volume: 42; Issue: 3 Linguagem: Inglês

10.1103/physrevd.42.737

1538-4500

H. W. Zheng, P. Perez, P. Auchincloss, D. Blanis, A. Bodek, H. S. Budd, S. C. Eno, C.A. Fry, H. Harada, Y. Ho, Y. K. Kim, T. Kumita, T. Mori, S. L. Olsen, N. M. Shaw, A. Sill, E. H. Thorndike, K. Ueno, R. Imlay, P. Kirk, J.N. Lim, R.R. McNeil, W. Metcalf, S.S. Myung, C. P. Cheng, Pei-Hong Gu, Jin Li, Y. K. Li, M. H. Ye, Y. C. Zhu, A. Abashian, K. Gotow, K.P. Hu, E. H. Low, M. E. Mattson, L. E. Piilonen, K.L. Sterner, S. Lusin, C. Rosenfeld, A.T.M. Wang, Sarah S. Wilson, M. Frautschi, H. Kagan, R. Kass, C. G. Trahern, R.E. Breedon, G. N. Kim, W. Ko, R. L. Lander, K. Maeshima, R. Malchow, J. R. Smith, D. Stuart, 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, R. Walker, F. Kajino, D. Perticone, R. Poling, T. L. Thomas, Y. Ishi, K. Miyano, H. Miyata, T. Sasaki, Y. Yamashita, A. Bacala, Jiayi Liu, I. H. Park, F. Sannes, S. Schnetzer, R. Stone, J. Vinson, S. Kobayashi, A. Murakami, J. S. Kang, Hyun Jung Kim, M. H. Lee, Dong Han, Eun Joong Kim, D. C. Son, Takayuki Kojima, S. Matsumoto, R. Tanaka, Y. Yamagishi, T. Yasuda, T. Ishizuka, Kouji Ohta,

Quantum Chromodynamics and Particle Interactions

We present the charged-particle multiplicity distributions for ${e}^{+}{e}^{\ensuremath{-}}$ annihilation at center-of-mass energies from 50 to 61.4 GeV. The results are based on a data sample corresponding to a total integrated luminosity of 30 ${\mathrm{pb}}^{\ensuremath{-}1}$ obtained with the AMY detector at the KEK storage ring TRISTAN. The charged-particle multiplicity distributions deviate significantly from the modified Poisson and pair Poisson distributions, but follow Koba-Nielsen-Olesen scaling and are well reproduced by the LUND parton-shower model.