Three-dimensional imaging of the nucleon in momentum space

TL;DR

This paper explores the three-dimensional momentum space structure of the nucleon using quark models to analyze transverse-momentum dependent parton distributions, revealing model-based relations and their physical origins.

Contribution

It introduces a detailed analysis of TMDs in quark models, highlighting relations among TMDs and their connection to rotational symmetry in the nucleon.

Findings

Results for six T-even TMDs obtained from light-cone wave functions.

Review of model relations among TMDs and their physical basis.

Discussion of rotational symmetry's role in TMD relations.

Abstract

Transverse-momentum dependent parton distributions (TMDs) are studied in the framework of quark models. Results for the six T-even TMDs are obtained from the overlap of three-quark light-cone wave functions, using both the chiral quark-soliton model and a light-cone constituent quark model. Furthermore, quark model relations among TMDs are reviewed and their physical origin is discussed in terms of rotational-symmetry properties of the nucleon state in its rest frame.