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

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Abstract

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.))%.

Original languageEnglish
Pages (from-to)245-252
Number of pages8
JournalPhysics Letters B
Volume313
Issue number1-2
DOIs
Publication statusPublished - Aug 26 1993

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Hinode, F., Abe, K., Amako, K., Arai, Y., Arima, T., Asano, Y., Chiba, M., Chiba, Y., Daigo, M., Fukawa, M., Fukushima, Y., Haba, J., Hemmi, Y., Higuchi, M., Hirose, T., Homma, Y., Hoshi, Y., Hosoda, N., Ishihara, N., ... Yoshida, H. (1993). A study of charged D* production in e+ e- annihilation at an average center-of-mass energy of 58 GeV. Physics Letters B, 313(1-2), 245-252. https://doi.org/10.1016/0370-2693(93)91220-H