A measurement of the gluon splitting rate into ccbar pairs in hadronic Z decays

Details A measurement of the gluon splitting rate into ccbar pairs in hadronic Z decays A measurement of the gluon splitting rate into ccbar pairs in hadronic Z decays

2003-02-03

arxiv.org/abs/hep-ex/0302003v3

Phys.Lett.B561:213-224,2003

Physics

High Energy Physics

High Energy Physics - Experiment

To be published in Phys. Lett. B

Scientific paper

10.1016/S0370-2693(03)00495-7

The rate of gluons splitting into $c \bar{c}$ pairs in hadronic $Z$ decays is measured using the data sample collected by ALEPH from 1991 to 1995. The selection is based on the identification of leptons (electrons and muons) originating from semileptonic charm decays, and on the topological properties of signal events. The result derived from the selected sample is $g_{c \bar{c}}=(3.26 \pm 0.23 \rm{(stat)} \pm 0.42 \rm{(syst)}) %$

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