Mueller Navelet jets at LHC - complete NLL BFKL calculation

TL;DR

This paper performs a comprehensive next-to-leading order BFKL calculation of Mueller Navelet jets at the LHC, revealing that NLL BFKL results resemble DGLAP predictions, challenging their discriminative power.

Contribution

It provides the first complete NLL BFKL analysis of Mueller Navelet jets, including both Green's function and vertex corrections, and compares these results to DGLAP predictions.

Findings

NLL corrections are equally significant for observables.

NLL BFKL results are similar to DGLAP predictions.

Challenges the use of Mueller Navelet jets to distinguish QCD dynamics.

Abstract

We calculate cross section and azimuthal decorrellation of Mueller Navelet jets at the LHC in the complete next-lo-leading order BFKL framework, i.e. including next-to-leading corrections to the Green's function as well as next-to-leading corrections to the Mueller Navelet vertices. The obtained results for standard observables proposed for studies of Mueller Navelet jets show that both sources of corrections are of equal, big importance for final magnitude and final behavior of observables. The astonishing conclusion of our analysis is that the observables obtained within the complete next-lo-leading order BFKL framework of the present paper are quite similar to the same observables obtained within next-to-leading logarithm DGLAP type treatment. This fact sheds doubts on general belief that the studies of Mueller Navelet jets at the LHC will lead to clear discrimination between the BFKL and the DGLAP dynamics.