The Pion Form Factor in AdS/QCD

TL;DR

This paper uses holographic QCD models, including hard- and soft-wall approaches, to compute the pion electromagnetic form factor, exploring chiral symmetry breaking effects and potential 1/N_c corrections.

Contribution

It introduces an intermediate background model combining features of hard- and soft-wall models for improved pion form factor calculations.

Findings

Hard- and soft-wall models produce consistent form factor results.

Evidence suggests possible 1/N_c corrections in the fit.

The intermediate background improves model features.

Abstract

Holographic QCD provides a unique framework in which to compute QCD observables. In this talk we summarize recent numerical work on computing the pion electromagnetic form factor using an AdS/QCD action that includes both spontaneous and explicit chiral symmetry breaking. We consider both hard- and soft-wall model results and develop an intermediate background that supports the best features of both. We also begin to see possible evidence in the fit for the presence of 1/N_c corrections.