Mueller-Navelet jets in next-to-leading order BFKL: theory versus experiment

TL;DR

This paper analyzes Mueller-Navelet jet production at the LHC using next-to-leading order BFKL resummation within QCD, comparing theoretical predictions with CMS experimental data to test the accuracy of high-energy QCD calculations.

Contribution

It provides a detailed next-to-leading order BFKL calculation of Mueller-Navelet jets, including jet vertices and various cross section representations, with optimized energy scales for comparison with experimental data.

Findings

Theoretical predictions agree with CMS data within uncertainties.

Different cross section representations show consistent results.

Optimization methods improve the accuracy of the perturbative calculations.

Abstract

We study, within QCD collinear factorization and including BFKL resummation at the next-to-leading order, the production of Mueller-Navelet jets at LHC with center-of-mass energy of 7 TeV. The adopted jet vertices are calculated in the approximation of small aperture of the jet cone in the pseudorapidity-azimuthal angle plane. We consider several representations of the dijet cross section, differing only beyond the next-to-leading order, to calculate a few observables related with this process. We use various methods of optimization to fix the energy scales entering the perturbative calculation and compare thereafter our results with the experimental data from the CMS collaboration.