Multiparton interactions and multiparton distributions in QCD

TL;DR

This paper reviews recent theoretical advances in the QCD description of multiparton interactions and distributions, highlighting conceptual challenges and potential for testing hadron structure.

Contribution

It provides a summary of recent progress and discusses open problems in the theoretical understanding of multiparton distributions in QCD.

Findings

Recent progress in QCD description of multiparton distributions

Identification of conceptual problems in multiparton interactions

Potential to use multiparton distributions to test hadron structure

Abstract

After a brief recapitulation of the general interest of parton densities, we discuss multiple hard interactions and multiparton distributions. We report on recent theoretical progress in their QCD description, on outstanding conceptual problems and on possibilities to use multiparton distributions as a laboratory to test and improve our understanding of hadron structure.