Longitudinal and Transverse Parton Momentum Distributions for Hadrons within Relativistic Constituent Quark Models

TL;DR

This paper calculates longitudinal and transverse parton distributions for pions and nucleons using relativistic quark models, emphasizing the role of one-gluon exchange in form factors and parton behavior at high momentum transfer.

Contribution

It introduces a method to derive parton distributions from relativistic quark models and highlights the importance of one-gluon exchange at short range.

Findings

Parton distributions show end-point behavior influenced by one-gluon exchange.

Form factors at large momentum transfer are consistent with one-gluon exchange dominance.

The model provides a unified description of hadron structure in both longitudinal and transverse momentum space.

Abstract

Longitudinal and transverse parton distributions for pion and nucleon are calculated from hadron vertexes obtained by a study of form factors within relativistic quark models. The relevance of the one-gluon-exchange dominance at short range for the behavior of the form factors at large momentum transfer and of the parton distributions at the end points is stressed.