Measurement of the inclusive differential jet cross section in pp collisions at $\sqrt{s}$ = 2.76 TeV

TL;DR

This paper presents the first measurement of the inclusive differential jet cross section in proton-proton collisions at 2.76 TeV, comparing results with NLO pQCD calculations and analyzing jet radius ratios.

Contribution

It provides the first experimental measurement of the inclusive jet cross section at this energy and compares it with theoretical predictions, including jet radius ratio analysis.

Findings

Good agreement between measurements and NLO pQCD calculations.

Jet radius ratio R=0.2 to R=0.4 matches theoretical predictions with hadronization effects.

First measurement of jet cross sections at 2.76 TeV in pp collisions.

Abstract

The ALICE collaboration at the CERN Large Hadron Collider reports the first measurement of the inclusive differential jet cross section at mid-rapidity in pp collisions at $\sqrt{s} = 2.76$ TeV, with integrated luminosity of 13.6 nb$^{-1}$. Jets are measured over the transverse momentum range 20 to 125 GeV/c and are corrected to the particle level. Calculations based on Next-to-Leading Order perturbative QCD are in good agreement with the measurements. The ratio of inclusive jet cross sections for jet radii $R = 0.2$ and $R = 0.4$ is reported, and is also well reproduced by a Next-to-Leading Order perturbative QCD calculation when hadronization effects are included.