A study of charged D* production in e+ e- annihilation at an average center-of-mass energy of 58 GeV

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

研究成果: Article査読

9 被引用数 (Scopus)

抄録

We have studied the production of charged D* mesons in e+ e- annihilation at an average center-of-mass energy of 58.0 GeV. Charged D* mesons were identified using two independent methods; the mass-difference method and the detection of the low transverse-momentum pion. The forward-backward asymmetry of the charm quark production was measured to be Ac= -0.61±0.13(stat.)±0.08(syst.). The cross section of inclusive D* production was found to be σ(e+ e-→D* ±+X) = 24.5 ± 5.3 (stat.)±3.0(syst.) pb. If we assume the standard model prediction for the charm quark production, we obtain the branching ratio for the charm quark to produce a charged D* meson to be Br(c→D*+ + X) = (22±5(stat.)±3(syst.))%.

本文言語English
ページ(範囲)245-252
ページ数8
ジャーナルPhysics Letters B
313
1-2
DOI
出版ステータスPublished - 1993 8月 26
外部発表はい

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

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