Measurement of the probability of gluon splitting into charmed quarks in hadronic Z decays

Acciarri, M. ; Achard, P. ; Adriani, O. ; Aguilar-Benitez, M. ; Gurtu, A. ; et., al (2000) Measurement of the probability of gluon splitting into charmed quarks in hadronic Z decays Physics Letters B, 476 (3-4). pp. 243-255. ISSN 0370-2693

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/S0370-2693(00)00163-5

Abstract

We have measured the probability, n̅g→∝̅, 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 n̅g→∝̅=[2.45±0.29±0.53]% .

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