The pretzelosity distribution function and intrinsic motion of the constituents in nucleon

TL;DR

This paper investigates the pretzelosity distribution function within a covariant quark-parton model, linking it to nucleon intrinsic motion and providing predictions for semi-inclusive deep inelastic scattering experiments.

Contribution

It introduces a relativistic covariant model that relates pretzelosity to other quark distributions without relying on SU(6) symmetry, offering new insights into nucleon structure.

Findings

Numerical predictions for SIDIS experiments.

Established relation between helicity, transversity, and pretzelosity.

Supports relativistic model consistency with observed distributions.

Abstract

The pretzelosity distribution function $h_{1T}^\perp$ is studied in a covariant the quark-parton model which describes the structure of the nucleon in terms of 3D quark intrinsic motion. This relativistic model framework supports the relation between helicity, transversity and pretzelosity observed in other relativistic models {\sl without} assuming SU(6) spin-flavor symmetry. Numerical results and predictions for SIDIS experiments are presented.