# Measurement of the inclusive jet cross-sections in proton--proton collisions at $\sqrt{s}= $8 TeV with the ATLAS detector

## TL;DR

This paper reports measurements of inclusive jet cross-sections in proton-proton collisions at 8 TeV with the ATLAS detector, comparing results to QCD predictions and identifying some discrepancies.

## Contribution

First measurement of inclusive jet cross-sections at 8 TeV with detailed comparison to theoretical models and parton distribution functions.

## Key findings

- Measured cross-sections agree with QCD predictions within uncertainties.
- Observed tensions suggest potential areas for refinement in theoretical models.
- Data provides constraints on proton parton distribution functions.

## Abstract

Inclusive jet production cross-sections are measured in proton--proton collisions at a centre-of-mass energy of $\sqrt{s}=$8 TeV recorded by the ATLAS experiment at the Large Hadron Collider at CERN. The total integrated luminosity of the analysed data set amounts to $20.2$ fb$^{-1}$. Double-differential cross-sections are measured for jets defined by the anti-$k_{t}$ jet clustering algorithm with radius parameters of $R=0.4$ and $R=0.6$ and are presented as a function of the jet transverse momentum, in the range between 70 GeV and 2.5 TeV and in six bins of the absolute jet rapidity, between 0 and 3.0. The measured cross-sections are compared to predictions of quantum chromodynamics, calculated at next-to-leading order in perturbation theory, and corrected for non-perturbative and electroweak effects. The level of agreement with predictions, using a selection of different parton distribution functions for the proton, is quantified. Tensions between the data and the theory predictions are observed.