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Inclusive Jet Production Cross Section based on 177 pb-1 of CDF Run 2 Data
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A search for new particles decaying to dijets is performed using 75 pb-1 of data from run 2.
The run 2 dijet mass spectrum begins at 180 GeV and falls steeply.
The highest mass event has a dijet mass of 1364 GeV.
(All results are preliminary.)
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This analysis presents first preliminary results on jet shapes and
energy flows in inclusive dijet production based on
77 pb-1 of Run II data. Jets are searched for using
a cone algorithm with radius R = 0.7. Jet shapes are determined
using both calorimeter towers and tracks from the COT. The measurements
are compared to leading-order QCD Monte Carlo predictions.
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The diffractive dijet events studied are characterized by the presence of two jets resulting
from a hard scattering and a leading antiproton, which escapes the collision intact.
Using Run II data and dedicated diffractive triggers, a measurement of the diffractive structure
function of the antiproton and a study of Double Pomeron Exchange (DPE) event candidates are presented.
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The behavior of the "underlying event" in hard scattering proton-antiproton collisions at 1.96 TeV is studied and compared with PYTHIA Tune A
and with the CDF published Run 1 analysis. The "underlying event" is studied using both "charged particle jets"
(as was done in our Run 1 analysis) and using "calorimeter jets". As expected the properties of the "underlying event" are the same
for both the "charged particle jet" and the "calorimeter jet" approach and both agree with the Run 1 analysis.
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We measure the photon + b and photon + c cross-sections. We present cross-sections both as a function of photon Et, in order to test QCD predictions at different energy scales, and for all photons with an
Et exceeding 25 GeV to gain maximal statistical sensitivity to deviations that could signal new physics production. Results are compared to and found to be consistent with Pythia LO predictions. We find no
evidence so far of new physics production.
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W+jets Production using Run 2 data
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Comparison between KtClus and JetClu for the inclusive jet production (uncorrected distributions)
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Analysis of Double Pomeron Exchange Production in Run 2
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Analysis of Diphoton Production in Run 2
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Exclusive chi_c Production Analysis using Run 2 data
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or on the title for plots)