Baryon form factors: Model-independent results

TL;DR

This paper reviews model-independent methods for analyzing baryon form factors, focusing on dispersive calculations and chiral perturbation theory, highlighting recent data and ongoing challenges.

Contribution

It provides a comprehensive review of dispersive and chiral perturbation theory approaches to baryon form factors, including new data insights and open problems.

Findings

Updated dispersive calculations with new experimental data

Leading one-loop chiral perturbation theory analysis of hyperon form factors

Discussion of open problems and future challenges in the field

Abstract

Baryon form factors can be analyzed in a largely model-independent fashion in terms of two complementary approaches. These are chiral perturbation theory and dispersion relations. I review the status of dispersive calculations of the nucleon electromagnetic form factors in the light of new data. Then, I present the leading one-loop chiral perturbation theory analysis of the hyperon and the strange nucleon form factors. Open problems and challenges are also discussed.