Measurement of forward-backward charge asymmetry in the process of b-quark production in e+e- annihilation around √s=60 GeV

M. Shirakata, M. Utsumi, K. Abe, K. Amako, Y. Arai, Y. Asano, M. Chiba, Y. Chiba, M. Daigo, M. Fukawa, T. Fukui, Y. Fukushima, J. Haba, Y. Hemmi, M. Higuchi, F. Hinode, T. Hirose, Y. Homma, Y. Hoshi, N. IshiharaN. Kanda, N. Kanematsu, J. Kanzaki, R. Kikuchi, T. T. Korhonen, T. Kondo, T. Koseki, H. Kurashige, J. MacNaughton, T. Matsui, M. Minami, K. Miyake, S. Mori, Y. Nagashima, T. Nakamura, I. Nakano, Y. Narita, S. Odaka, K. Ogawa, T. Ohama, T. Ohsugi, A. Okamoto, A. Ono, T. Oyama, H. Sakamoto, M. Sakuda, N. Sasao, M. Sato, H. Shibuya, M. Shioden, J. Shirai, S. Sugimoto, T. Sumiyoshi, A. Suzuki, Y. Takada, H. Takaki, F. Takasaki, A. Taketani, M. Takita, N. Tamura, N. Terunuma, K. Tobimatsu, T. Tsuboyama, S. Uehara, Y. Unno, T. Watanabe, Y. Watase, F. Yabuki, Y. Yamada, Y. Yonezawa, H. Yoshida

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6 Citations (Scopus)

Abstract

We have measured the forward-backward charge asymmetry in the process of b-quark production in e+e- annihilation at TRISTAN. It was made possible by detecting prompt leptons from b-quarks. The obtained asymmetry is A= -0.55±0.15±0.08. If corrected for B-meson mixing effects with the assumptions given in the text, the asymmetry becomes A=f-0.78±0.21±0.11, which is consistent with the prediction of the standard model, namely the assignment of the b-quark to the isospin doublet of the third quark generation.

Original languageEnglish
Pages (from-to)499-505
Number of pages7
JournalPhysics Letters B
Volume278
Issue number4
DOIs
Publication statusPublished - 1992 Apr 2

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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