Spin effects in the pion holographic light-front wavefunction

TL;DR

This paper incorporates dynamical spin effects into the holographic light-front wavefunction of the pion, leading to improved predictions of various physical observables such as charge radius and form factors.

Contribution

It introduces a novel approach to include spin effects in the holographic model, enhancing the accuracy of pion property predictions.

Findings

Improved agreement with experimental data for pion observables.

Successful prediction of the pion's charge radius and decay constant.

Enhanced modeling of the photon-to-pion transition form factor.

Abstract

We account for dynamical spin effects in the holographic light-front wavefunction of the pion in order to predict its mean charge radius, decay constant, spacelike electromagnetic form factor, twist-2 Distribution Amplitude and the photon-to-pion transition form factor. Using a universal fundamental AdS/QCD scale of 523 MeV and a constituent quark mass of 330 MeV, we find a remarkable improvement in describing all observables.