Higher Order Polarizabilities of the Proton

TL;DR

This paper investigates the proton's internal structure by measuring higher order polarizabilities through Compton scattering, comparing experimental results with theoretical models like chiral symmetry and quark models.

Contribution

It provides new measurements of higher order proton polarizabilities and compares them with theoretical predictions, extending understanding of proton structure.

Findings

Measured values for $ ext{α}_{E2}^p$, $ ext{β}_{E2}^p$, $ ext{α}_{E u}^p$, $ ext{β}_{E u}^p$

Compared experimental results with chiral symmetry and quark model predictions

Discussed extensions to spin-polarizabilities

Abstract

Compton scattering results are used to probe proton structure via measurement of higher order polarizabilities. Values for $\alpha_{E2}^p,\beta_{E2}^p,\alpha_{E\nu}^p,$ $\beta_{E\nu}^p$ determined via dispersion relations are compared to predictions based upon chiral symmetry and from the constituent quark model. Extensions to spin-polarizabilities are also discussed.