Charged scalar PTsum distribution in the radial distance R in eta-phi space
from chgjet1 (leading charged jet) for charged particles with
PT > 0.5 GeV/c and |eta| < 1
when PTJ1 > 5 and 30 GeV/c. The
points are <PTsum> in a 0.02 bin. The PTJ1 > 5 GeV/c points are Min-Bias data and the
PTJ1 > 30 GeV/c points are JET20 data. The data are compared with the QCD
Monte-Carlo model predictions of HERWIG 5.9, ISAJET 7.32, and PYTHIA 6.115, with their default parameters and
PT(hard) > 3 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%.
For an average charged jet
with PTJ1 > 5 GeV/c (> 30 GeV/c), 80% of the charged PTsum lie within R = 0.36 (0.18)
as marked by the arrows. (Note the logarithmic scale)