Three dimensional imaging of the nucleon --- TMD (theory and phenomenology)

TL;DR

This paper reviews the current state and future prospects of three-dimensional nucleon imaging using TMDs, focusing on theoretical frameworks and phenomenological insights for semi-inclusive reactions.

Contribution

It provides a comprehensive overview of the theoretical and phenomenological developments in TMD studies and outlines steps needed for full 3D nucleon imaging.

Findings

Comparison of TMD framework with inclusive deep inelastic scattering

Summary of current achievements in TMD phenomenology

Future directions for 3D nucleon imaging

Abstract

This is intend to provide an overview of the theoretical and phenomenological parts of the TMD (Transverse Momentum Dependent parton distribution and fragmentation functions) studies. By comparing with the theoretical framework that we have for the inclusive deep inelastic lepton-nucleon scattering and the one-dimensional imaging of the nucleon, I try to outline what we need to do in order to construct a comprehensive theoretical framework for semi-inclusive reactions and the three dimensional imaging of the nucleon. After that, I try to give an overview of what we have already achieved and make an outlook for the future.