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. 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.
Phys. Lett. B 722 (2013) 262-272
HEP Data
e-Print: arXiv:1301.3475 | PDF | inSPIRE
CERN-PH-EP-2012-301
Figure 2
Simulated detector response to jets. Upper panels: probability distribution of $\left(p_{\rm T,jet}^{\rm detector}-p_{\rm T,jet}^{\rm part}\right)/p_{\rm T,jet}^{\rm part}$, in intervals of $p_{\rm T,jet}^{\rm part}$. Lower left: mean and median of distribution as a function of $p_{\rm T,jet}^{\rm part}$. Lower right: standard deviation of distribution as a function of $p_{\rm T,jet}^{\rm part}$. The statistical errors are smaller than the marker size. |  |
Figure 3
Upper panels: inclusive differential jet cross sections for $R=0.2$ and $R=0.4$. Vertical bars show the statistical error, while boxes show the systematic uncertainty. The bands show the NLO pQCD calculations discussed in the text. Lower panels: ratio of NLO pQCD calculations to data. Data points are placed at the center of each bin. |  |
