New evidence for the BFKL dynamics in Mueller-Navelet dijet production via matching of the RG-invariant solution with high-energy factorization

TL;DR

This paper provides evidence for BFKL dynamics in Mueller-Navelet dijet production by matching NLO BFKL solutions with high-energy factorization, successfully describing collider data and highlighting the importance of NLL resummation.

Contribution

It introduces a RG-invariant NLO BFKL solution matched with high-energy factorization, offering a unified description of dijet data across different rapidity ranges.

Findings

Data from Tevatron and LHC are well described by the model.

Angular distributions support NLL BFKL dynamics.

Initial state radiation effects are crucial for accurate modeling.

Abstract

We study the effects of matching of the high-energy resummation based on the BFKL equation with initial state radiation effects, taken into account within the framework of high-energy factorization, in the production of Mueller-Navelet dijets at hadron colliders. We use the RG-invariant solution of the NLO BFKL equation built out of eigenfunctions perturbatively constructed up to NLO to avoid the need for special renormalization scale setting. We demonstrate that various data sets from the FNAL Tevatron and CERN LHC can be described in this way and both the initial state radiation effects of the high-energy factorization and the NLL BFKL resummation are crucial for the uniform description of the data across all values of the rapidity difference between the jets. The behaviour of angular distributions and ratios of angular coefficients with increasing rapidity separation between the jets provides clear evidence for the NLL BFKL dynamics at the Tevatron and LHC.