Small-x Processes in Perturbative Quantum Chromodynamics

TL;DR

This paper reviews and compares DGLAP and BFKL equations for small-x processes in QCD, aiming to unify their applicability and understand the transition from perturbative to non-perturbative physics.

Contribution

It provides a systematic study to understand the limits of DGLAP and BFKL formulations and proposes a unified framework covering the full perturbative QCD range.

Findings

Identifies the limitations of DGLAP and BFKL equations at small-x.

Develops a unified approach to describe small-x processes.

Explores the transition from perturbative to non-perturbative regimes.

Abstract

Starting from a rewiev of DGLAP and BFKL evolution equations for small-x processes, a sistematic study is performed in order to understand the limits of both the formulations and to improve them in a unique framework, which aims to cover the whole range of applicability of perturbative QCD and which describes the transition mechanism from perturbative to non-perturbative physics in the region where unitarity contributions are expected not to be important.