# Leading twist generalized parton distributions and spin densities in a proton

## TL;DR

This paper calculates leading twist generalized parton distributions (GPDs) for the proton using a quark-diquark model based on soft-wall AdS/QCD, revealing detailed spin density structures for various polarizations.

## Contribution

It introduces a novel calculation of both chiral even and odd GPDs in a quark-diquark model derived from soft-wall AdS/QCD, providing detailed spin density insights.

## Key findings

- Spin densities vary with quark and proton polarization.
- Transversely polarized proton involves both chiral even and odd GPDs.
- Model offers detailed visualization of spin structures.

## Abstract

We evaluate both chirally even and odd generalized parton distributions(GPDs) in the leading twist in a recently proposed quark-diquark model for the proton where the light front wavefunctions are constructed from the soft-wall AdS/QCD prediction. The GPDs in transverse impact parameter space give the spin densities for different quark and proton polarizations. For longitudinally polarized proton only chiral even GPDs contribute but for transversely polarized proton both chiral even and chiral odd GPDs contribute to the spin densities. We present a detail study of the spin densities in this model.