The measured cross section corrected to the parton level compared with NLO QCD predictions.
The data has been corrected for the underlying event and hadronization effects.
The total systematic error is shown as the band around the data points. The theoretical cross section uncertainty arising from the PDFs is shown as the two lines.
An additional 6% normalization associated with the measurement of the
luminosity is not shown in the figure.
The individual sources of systematic error on the measured cross section.
The dominant source of error originates from the jet energy scale uncertainty.
Measured cross section before and after the Underlying Event correction
Data compared with NLO pQCD on a log scale. The data has been corrected to the
parton level.
Data compared with NLO pQCD on a log scale. The data has been corrected to the
hadron level.
Contributions resulting from the underlying event and hadronization effects to the
overall hadron to parton correction can be studied separately.
The corrections are derived using PYTHIA
The uncertainty of the correction was estimated by taking the difference
between HERWIG and PYTHIA and is shown as the band in the
plot.
The total correction applied to the data is given by:
The inverse of the correction factors is shown. These corrections would
be applied to the MC in order to compare with data corrected to the hadron level.
The inverse of total correction including underlying event and hadronization effect
is shown. This correction would be applied to the parton level MC in order to
compare to the data corrected to the particle level.