Dynamical Structure of Baryons

TL;DR

This paper investigates the internal structure of baryons by calculating their electric, magnetic, and spin-dependent polarizabilities using chiral perturbation theory, providing insights into hadron dynamics through Compton scattering analysis.

Contribution

It introduces semi-automatized calculations in chiral perturbation theory to evaluate baryon polarizabilities up to next-to-leading order.

Findings

Calculated polarizabilities for SU(3) octet baryons.

Analyzed energy dependencies across meson photoproduction range.

Provided detailed theoretical predictions for hadron internal structure.

Abstract

Compton scattering offers a unique opportunity to study the dynamical structure of hadrons over a wide kinematic range, with polarizabilities characterizing the hadron active internal degrees of freedom. We present calculations and detailed analysis of electric and magnetic and the spin-dependent dynamical polarizabilities for the lowest in mass SU(3) octet of baryons. These extensive calculations are made possible by the recent implementation of semi-automatized calculations in chiral perturbation theory which allows evaluating polarizabilities from Compton scattering up to next-to-the-leading order. The dependencies for the range of photon energies covering the majority of the meson photoproduction channels are analyzed.