Pion form factor in the QCD sum-rule approach with nonlocal condensates

TL;DR

This paper calculates the electromagnetic pion form factor using QCD Sum Rules with nonlocal condensates, incorporating perturbative spectral density and $O(eta_s)$ corrections to improve accuracy.

Contribution

It introduces a novel approach by combining nonlocal condensates with perturbative spectral density including $O(eta_s)$ contributions for more precise form factor calculations.

Findings

Calculated pion form factor with improved accuracy.

Demonstrated the impact of nonlocal condensates on form factor.

Included $O(eta_s)$ corrections in the spectral density.

Abstract

We present results of a calculation of the electromagnetic pion form factor within the framework of QCD Sum Rules with nonlocal condensates, using a perturbative spectral density which includes $O(\alpha_s)$ contributions.