Measurement of the Inclusive Jet Cross Section using the Kt algorithm in pp-bar Collisions at sqrt(s) = 1.96 TeV

Abstract

We report on a measurement of the inclusive jet production cross section in pp-bar collisions at sqrt{s} = 1.96 TeV using data collected with the upgraded Collider Detector at Fermilab in Run II (CDF II) corresponding to an integrated luminosity of 385 pb^-1. Jets are reconstructed using the kt algorithm. The measurement is carried out for jets with rapidity 0.1 < | yjet | < 0.7 and transverse momentum in the range 54 < ptjet < 700 GeV/c. The measured cross section is in good agreement with next-to-leading order perturbative QCD predictions after the necessary non-perturbative parton-to-hadron corrections are included.

Figures (2)

• Figure 1: Measured inclusive jet cross section (black dots) as a function of $\rm p_{\rm T}^{\rm jet}$ compared to NLO pQCD predictions (histogram). The shaded band shows the total systematic uncertainty on the measurement.
• Figure 2: Ratio Data/Theory as a function of $\rm p_{\rm T}^{\rm jet}$. The enclosed figure expands the region $\rm p_{\rm T}^{\rm jet} < 298$ GeV/c. The error bars (shaded band) show the total statistical (systematic) uncertainty on the data. A $5.8 \%$ uncertainty on the luminosity is not included. The solid lines indicate the PDF uncertainty on the theoretical prediction. The dashed line presents the ratio of MRST2004 and CTEQ6.1M predictions. The dotted-dashed line shows the ratio of predictions with $2 \mu_0$ and $\mu_0$.