Measurement of the Inclusive Jet Cross Section at the Fermilab Tevatron p-pbar Collider Using a Cone-Based Jet Algorithm

TL;DR

This paper reports a precise measurement of the inclusive jet cross section at the Fermilab Tevatron using a cone-based algorithm, confirming QCD predictions and comparing with k_T algorithm results.

Contribution

First measurement of the inclusive jet cross section at 1.96 TeV using the Midpoint cone algorithm, enhancing understanding of PDFs at high momentum fractions.

Findings

Results agree with next-to-leading-order QCD predictions.

Cross section ratio between cone and k_T algorithms matches theoretical expectations.

Measurement improves constraints on parton distribution functions.

Abstract

We present a measurement of the inclusive jet cross section in p-pbar collisions at sqrt{s}=1.96 TeV based on data collected by the CDF II detector with an integrated luminosity of 1.13 fb^-1. The measurement was made using the cone-based Midpoint jet clustering algorithm in the rapidity region of |y|<2.1. The results are consistent with next-to-leading-order perturbative QCD predictions based on recent parton distribution functions (PDFs), and are expected to provide increased precision in PDFs at high parton momentum fraction x. The results are also compared to the recent inclusive jet cross section measurement using the k_T jet clustering algorithm, and we find that the ratio of the cross sections measured with the two algorithms is in agreement with theoretical expectations over a large range of jet transverse momentum and rapidity.