EPS Figure
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The average number of "transverse" charged particles (PT > 0.5 GeV/c, |eta| < 1) as a function of the transverse momentum of the leading charged jet compared with the QCD Monte-Carlo model predictions PYTHIA 6.115 with different structure functions and different multiple parton interaction parameters and with PT(hard) > 0 GeV/c. The Monte-Carlo model predictions have been corrected for the CTC track finding efficiency (8% of the charged tracks are, on the average, removed) and have an uncertainty (statistical plus systematic) of about 5%. (Return)