| Title | Description | Date |
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MidPoint Inclusive Jet Production Cross Section based on 385 pb-1 of CDF Run 2 Data.
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Revised
October 2005 |
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We present preliminary results on inclusive jet production using the
longitudinally invariant Kt algorithm (Ellis-Soper inclusive mode) for
jets in the region 0.1 < |Y| < 0.7 and P_T > 54 GeV/c. Results are based
on 385 pb-1 of CDF II data. Measurements are corrected to the hadron
level and compared to pQCD NLO calculations as implemented in JETRAD including
parto-to-hadron corrections.
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April 2005 |
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We present a study of the inclusive jet production cross section using the
longitudinally invariant KT algorithm (Ellis-Soper inclusive mode) for
jets with PT = 54 GeV/c in four different jet rapidity regions:
|Y| < 0.1, 0.7 < |Y| < 1.1, 1.1 < |Y| < 1.6 and 1.6 < |Y| < 2.1. Results are
based on 385 pb-1 of CDF Run II data and complement previous measurements in
the region 0.1 < |Y| < 0.7. Measurements are fully unfolded to the hadron level.
The data is compared to pQCD NLO calculations as determined using JETRAD. The
theoretical predictions are corrected for underlying event and hadronization.
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August 2005 |
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This analysis presents first preliminary results on jet shapes and
energy flows in inclusive dijet production based on
170 pb-1 of Run II data. Jets are searched for using
the midpoint algorithm with radius R = 0.7. Jet shapes are determined
using calorimeter towers and corrected to the hadron level. The measurements
are compared to leading-order QCD Monte Carlo predictions.
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April 2004 |
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Preliminary results for the measurement of the inclusive b-jet cross section in RunII,
based on about 300 pb^-1 of data collected from February 2002 to September 2004.
The analysis uses jets in the central rapidity region (|y|<0.7) reconstructed with the
MidPoint algorithm in a P_T(jet) range of 30 GeV to 360 GeV (uncorrected) and exploits the good tracking
capabilities of the CDF detector to tag b-jets by reconstructing secondary vertex with the
SecVtx algorithm. The measurement is corrected in average for detector effects and
compared to the leading order Monte Carlo predictions from Pythia (tune A).
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April 2005 |
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We measure the inclusive bb jet production cross section by requiring
two secondary vertex tagged jets within |eta|< 1.2. One of these tagged
jets has to have a corrected transverse energy greater than 30 GeV, the
other has to have a corrected transverse energy greater than 20 GeV. We
use the 2D SECVTX algorithm to tag heavy flavour jets and use a fitting
technique to determine the fraction of these that are true b-jets. We
compare our results to Leading Order (Pythia and Herwig) and Next to
Leading Order (MC@NLO) predictions.
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April 2005 |
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Preliminary results are presented of the the single inclusive bottom jet cross
section for events containg a Z0 boson. The jets must have a transverse energy ET > 20 GeV
and pseudoradity |eta | < 1.5. Jets are measured with a cone algorithm with cone size 0.7.
Events are selected for the decay channels Z0 -> e+e- and Z0 -> mu+mu-. Jets containing
a b hadron are indentified by reconstructing a secondary vertex. The measurement is based
on 337 pb-1 for the e decay channel and 324 pb-1 for the mu decay channel. The data are
unfolded to the hadron level and compared to predictions from PYTHIA and NLO QCD
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September 2005 |
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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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March 2003 |
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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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April 2003 |
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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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public note |
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W+jets Production using Run 2 data
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February 2004 |
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Comparison between KtClus and JetClu for the inclusive jet production (uncorrected distributions)
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November 2003 |
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Analysis of Double Pomeron Exchange Production in Run 2
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May 2003 |
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Analysis of Diphoton Production in Run 2
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August 2004 |
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Exclusive chi_c Production Analysis using Run 2 data
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September 2003 |
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Features of the Run 1b inclusive three-jet sample are compared to predictions by the NLO Monte Carlo event generator of Kilgore and Giele (hep-ph/0009193).
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RUN I DATA |
or on the title for plots)