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 |
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ページ(範囲) | 245-252 |
ページ数 | 8 |
ジャーナル | Physics Letters B |
巻 | 313 |
号 | 1-2 |
DOI | |
出版ステータス | Published - 8月 26 1993 |
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