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The "Transverse" Region and the "Underlying Event" as Defined by "Calorimeter Jets" |
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The direction of the leading calorimeter jet (JetClu, R = 0.7) in each event is used to define
the "transverse" region of
eta-phi space,
where eta is the pseudo-rapidity measured along the beam axis and
 is the azimuthal angle relative to the
leading "calorimeter jet".
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| Only charged particles in the region PT > 0.5 GeV/c and |eta| < 1 are considered, with the leading "calorimeter jet" in the range |eta(jet1)| < 2. The figure below shows the Run 2 data on the average density of charged particles in the "transverse" region define using "calorimeter jets" as a function of the leading "calorimeter jet" transverse energy, ET(jet1), compared with the predictions of PYTHIA Tune A at 1.96 TeV>. | |||||
(above plot blessed on 4/18/03) |
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| The figure below shows the Run 2 data on the average density of charged particles in the "transverse" region define using "calorimeter jets" as a function of the leading "calorimeter jet" transverse energy, ET(jet1), compared with the Run 2 charged particle jet results. | |||||
(above plot blessed on 4/18/03) |
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| The figure below shows the Run 2 data on the average density of charged particles in the “transverse” region define using "calorimeter jets" and "charged particle jets" compared with the predictions of PYTHIA Tune A at 1.96 TeV. | |||||
(above plot blessed on 4/18/03) |
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| The figure below shows the Run 2 data on the average PTsum density of charged particles in the “transverse” region define using "calorimeter jets" as a function of the leading "calorimeter jet" transverse energy, ET(jet1), compared with the predictions of PYTHIA Tune A at 1.96 TeV. | |||||
(above plot blessed on 4/18/03) |
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| The figure below shows the Run 2 data on the average PTsum density of charged particles in the “transverse” region define using "calorimeter jets" as a function of the leading "calorimeter jet" transverse energy, ET(jet1), compared with the charged particle jet results. | |||||
(above plot blessed on 4/18/03) |
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| The figure below shows the Run 2 data on the average PTsum density of charged particles in the “transverse” region define using "calorimeter jets" and "charged particle jets" compared with the predictions of PYTHIA Tune A at 1.96 TeV. | |||||
(above plot blessed on 4/18/03) |
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