Nucleon Form Factors from 5D Skyrmions

TL;DR

This paper models nucleons as 5D skyrmions within an effective field theory, performing quantization to compute form factors, achieving results consistent with experimental data within 30%.

Contribution

It extends and refines the analysis of 5D skyrmions for baryons, including complete quantization of collective coordinates for static observable calculations.

Findings

Achieves nucleon form factors consistent with experimental data within 30%.

Provides a detailed numerical analysis of 5D skyrmions.

Validates the large-N_c QCD expectations in a 5D effective theory.

Abstract

Several aspects of hadron physics are well described by a simple 5D effective field theory. Baryons arise in this scenario as "large" (and therefore calculable) 5D skyrmions. We extend and refine the existing analysis of this 5D soliton, which is fairly non-trivial due to the need of numerical methods. We perform the complete quantization of those collective coordinates which are relevant for computing the static observables like the nucleon form factors. We compare the result with simple expectations about large-N_c QCD and with the experimental data. An agreement within 30% is found.