Particle Spectrum In Gluon Jets Produced In E(+)E(-) Annihilations At Root-S Around 58 Gev

H. Takaki,J. Haba,K. Abe, K. Amako,Y. Arai,T. Arima,Y. Asano,M. Chiba,Y. Chiba,M. Daigo,M. Fukawa,Y. Fukushima,Y. Hemmi,M. Higuchi,F. Hinode,T. Hirose,Y. Homma,Y. Hoshi,N. Hosoda, N. Ishihara,E. Kanatani,N. Kanda,N. Kanematsu, J. Kanzaki,R. Kikuchi,T. Kondo,T. Korhonen,A. Krüger,H. Kurashige,J. MacNaughton,T. Matsui,K. Miyake,M. Miura,S. Mori,Y. Nagashima,T. Nakamura, I. Nakano, S. Odaka,K. Ogawa,T. Ohama, T. Ohsugi,H. Ohyama, A. Okamoto,A. Ono,T. Oyama,H. Sakamoto,M. Sakuda, M. Sato,N. Sato,M. Shioden,J. Shirai,M. Shirakata,T. Sumiyoshi,A. Suzuki,Y. Takada,F. Takasaki,M. Takita,N. Tamura,K. Tobimatsu, T. Tsuboyama, S. Uehara,Y. Unno,M. Utsumi,Y. Watase,F. Yabuki,Y. Yamada,T. Yamagata,Y. Yonezawa,H. Yoshida

PHYSICAL REVIEW LETTERS（1993）

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摘要

Inclusive momentum spectra of charged particles in threefold symmetric three-jet (qqg) and two-jet + gamma (qqgamma) events taken from e+e- annihilation at center-of-mass energy of 58 GeV were compared. The spectrum of gluon jets was found to be significantly softer than that of quark jets with the same energy and topology.

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