Multiple interactions and generalized parton distributions

TL;DR

This paper investigates multiple hard interactions in proton-proton collisions at the LHC, exploring their theoretical basis and potential links to generalized parton distributions to improve understanding of their dynamics.

Contribution

It provides a theoretical analysis of multiple parton interactions in QCD and examines how they relate to generalized parton distributions, aiming to refine phenomenological models.

Findings

Identifies the extent to which simple models align with QCD theory.

Proposes a connection between multiple interactions and generalized parton distributions.

Highlights areas where phenomenological descriptions need extension.

Abstract

Multiple parton interactions in a single proton-proton collision are expected to play an important role for many observables at LHC. To a large part their phenomenological description relies on rather simple and physically intuitive assumptions. We report on an investigation of multiple hard interactions in QCD, which aims at identifying to which extent this simple description arises from theory and where it needs to be extended. An approximate connection with generalized parton distributions may help elucidate some aspects of multiple-interaction dynamics.