Covariant ChPT calculation of the hyperon forward spin polarizability

TL;DR

This paper uses covariant ChPT to predict hyperon forward spin polarizabilities, extending successful nucleon predictions to hyperons by including spin-3/2 states and virtual contributions, with results consistent across schemes.

Contribution

It introduces covariant ChPT calculations for hyperon spin polarizabilities, incorporating spin-3/2 states and virtual effects, advancing the theoretical understanding of hyperon structure.

Findings

Nucleon results agree with experimental data.

Hyperon polarizability predictions extend nucleon methods.

Results are scheme-independent.

Abstract

We predict the values for baryon forward spin polarizabilities in fully covariant ChPT and including the virtual contributions of the spin-3/2 states. As the nucleon results are in good agreement with the experimental data and they do not depend on renormalization schemes, we extend the calculations to the hyperon sector.