BES Results on Inclusive D Meson Decays

Details BES Results on Inclusive D Meson Decays BES Results on Inclusive D Meson Decays

1999-03-24

arxiv.org/abs/hep-ex/9903059v1

Physics

High Energy Physics

High Energy Physics - Experiment

6 pages, 3 figures, DPF99

Scientific paper

A preliminary measurement of branching fractions of the D0 and D+ mesons into the phi meson is reported. The result is based on a data sample of 22.3 pb-1 collected at the CM energy of 4.03 GeV with the BES detector operated at the BEPC e+e- storage ring. From tagged D\bar{D} pair events the average branching fraction for a mixture of D0 and D+ is determined to be B(D->phiX)= (1.29+-0.51+-0.12)%. Upper limits at 90% confidence level are set to be B(D0->phiX)<2.5%, B(D+->phiX)<5.0%, and B(D+->phie+X)<1.6%.

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