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

3 CMS
IP2I Lyon - Institut de Physique des 2 Infinis de Lyon
Abstract : We have measured the probability, $\overline{n}_{\rm{g} \rightarrow c\overline{c}}$, 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 $\overline{n}_{\rm{g} \rightarrow c\overline{c} } = [2.45 \pm 0.29 \pm 0.53]\$.
Document type :
Journal articles

Cited literature [19 references]

http://hal.in2p3.fr/in2p3-00009666
Contributor : Sylvie Flores <>
Submitted on : Thursday, December 13, 2001 - 12:01:46 PM
Last modification on : Friday, December 4, 2020 - 1:22:16 PM
Long-term archiving on: : Tuesday, June 2, 2015 - 12:01:44 PM

### Identifiers

• HAL Id : in2p3-00009666, version 1

### Citation

M. Acciarri, P. Achard, O. Adriani, M. Aguilar-Benitez, J. Alcaraz, et al.. Measurement of the Probability of Gluon Splitting into Charmed Quarks in Hadronic Z Decays. Physics Letters B, Elsevier, 2000, 476, pp.243-255. ⟨in2p3-00009666⟩

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