Parton distribution functions of proton in a light-front quark-diquark model

TL;DR

This paper models the proton's parton distribution functions using a light-front quark-diquark approach, analyzing polarization states, scale evolution, and calculating axial and tensor charges to compare with experimental data.

Contribution

It introduces a light-front quark-diquark model to compute polarized and unpolarized PDFs and their scale evolution, providing new insights into proton structure.

Findings

Computed PDFs for various polarization states.

Analyzed scale evolution of PDFs.

Calculated axial and tensor charges consistent with experiments.

Abstract

We present the parton distribution functions (PDFs) for un- polarised, longitudinally polarized and transversely polarized quarks in a proton using the light-front quark diquark model. We also present the scale evolution of PDFs and calculate axial charge and tecsor charge for $u$ and $d$ quarks at a scale of experimental findings.