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arXiv · hep-ex/9911016

Measurement of the Probability of Gluon Splitting into Charmed Quarks in Hadronic Z Decays

L3 Collaboration
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Abstract

We have measured the probability, n(g->cc~), of a gluon splitting into a charm-quark pair using 1.7 million hadronic Z decays collected by the L3 detector. Two independent methods have been applied to events with a three-jet topology. One method relies on tagging charmed hadrons by identifying a lepton in the lowest energy jet. The other method uses a neural network based on global event shape parameters. Combining both methods, we measure n(g->cc~)= [2.45 +/- 0.29 +/- 0.53]%.

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L3 Collaboration. 1999-11-12. Measurement of the Probability of Gluon Splitting into Charmed Quarks in Hadronic Z Decays. https://doi.org/10.1016/s0370-2693(00)00163-5

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