Charge asymmetry of hadron jets and limits on the compositeness scales in the e+e−→qq̄ reaction at 〈√s〉 = 57.6 GeV
1989; Elsevier BV; Volume: 232; Issue: 3 Linguagem: Inglês
10.1016/0370-2693(89)90768-5
ISSN1873-2445
AutoresK. Abe, K. Amako, Y. Arai, Y. Asano, M. Chiba, Yasuo Chiba, M. Daigo, T. Emura, I. Endo, M. Fukawa, T. Fukui, Y. Fukushima, J. Haba, D. Haidt, I. Hayashibara, Y. Hemmi, M. Higuchi, T. Hirose, Y. Hojyo, Y. Homma, Y. Hoshi, Y. Ikegami, N. Ishihara, T. Kamitani, Nobuyuki Kanematsu, J. Kanzaki, R. Kikuchi, T. Kondo, T. Koseki, K. Kubo, H. Kurashige, Takayuki Matsui, M. Minami, K. Miyake, Shigeki Mori, Y. Nagashima, T. Nakamura, I. Nakano, Y. Narita, S. Odaka, K. Ogawa, T. Ohama, T. Ohsugi, A. Okamoto, Akira Ono, H. Osabe, Takashi Oyama, Hitoshi Saitô, H. Sakae, H. Sakamoto, S. Sakamoto, M. Sakano, M. Sakuda, N. Sasao, M. Sato, M. Shioden, J. Shirai, S. Shirakata, F. Suekane, S. Sugimoto, T. Sumiyoshi, S. Suzuki, Y. Suzuki, Yoshihisa Takada, F. Takasaki, A. Taketani, M. Takita, N. Tamura, R. Tanaka, N. Terunuma, K. Tobimatsu, T. Tsuboyama, Akira Tsukamoto, S. Uehara, Y. Unno, M. Utsumi, M. Wakai, Takashi Watanabe, Y. Watase, F. Yabuki, Y. Yamada, T. Yamagata, T. Yamashita, Yasushige Yonezawa, Hajime Yoshida,
Tópico(s)Quantum Chromodynamics and Particle Interactions
ResumoA charge asymmetry has been measured in hadron jets from e+e− annihilation at energies between 52 and 61.4 geV (〈√s〉=57.6 GeV). The measured asymmetry is A=11.4%±2.2%±2.1% and is consistent with the prediction of the standard model of the electroweak theory. By using the differential cross section, lower limits of the compositeness scale in eeqq contact interactions have been determined to be typically a few TeV at 95% CL.
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