Observation of the color coherence effect in sub-jet multiplicity of three-jet and four-jet events in e+e- annihilations

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

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


We have measured the ratio of the average sub-jet multiplicity in 3-jet to 2-jet events, R23, and 4-jet to 2-jet events, R24, using the e+e- annihilation data at √s = 58 GeV obtained from the AMY detector. We compare the measured values of R23 and R24 with the predictions of coherent and incoherent Monte Carlo models. R23 is also compared with the NLLA calculations to all-orders. The color coherence effect has been observed to contribute to the suppression of R23 and R24. Also, the difference of the behavior between gluon jets in 3-jet and 4-jet events has been studied.

Original languageEnglish (US)
Pages (from-to)304-312
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number4
StatePublished - May 9 1996

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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