High-Energy Resummation in Di-hadron Production at the LHC

TL;DR

This paper explores the theoretical predictions for di-hadron production at the LHC, focusing on BFKL resummation effects, to test high-energy QCD dynamics in a novel experimental channel.

Contribution

It provides the first theoretical predictions for di-hadron cross sections and azimuthal correlations at the LHC using NLA BFKL formalism.

Findings

Predicted cross sections for di-hadron production at LHC energies.

Calculated azimuthal angle correlations between hadron pairs.

Demonstrated the potential of di-hadron measurements to test BFKL dynamics.

Abstract

We propose to study at the Large Hadron Collider (LHC) the inclusive production of a pair of hadrons (a "di-hadron" system) in a kinematics where two detected hadrons with high transverse momenta are separated by a large interval of rapidity. This process has much in common with the widely discussed Mueller-Navelet jet production and can also be used to access the dynamics of hard proton-parton interactions in the Regge limit. For both processes large contributions enhanced by logarithms of energy can be resummed in perturbation theory within the Balitsky-Fadin-Kuraev-Lipatov (BFKL) formalism with next-to-leading logarithmic accuracy (NLA). The experimental study of di-hadron production would provide with an additional clear channel to test the BFKL dynamics. We present here the first theoretical predictions for cross sections and azimuthal angle correlations of the di-hadrons produced with LHC kinematics.