Nuclear interactions and the space-like structure of the pion

TL;DR

This paper explores how chiral perturbation theory can be applied to high space-like momentum transfers in nuclear interactions, the nucleon sigma-term, and the pion's structure, providing insights into hadronic physics.

Contribution

It demonstrates the extension of chiral perturbation theory to high momentum transfers in three key areas of hadronic physics.

Findings

Chiral perturbation theory reliably describes nuclear interactions at high space-like momenta.

Results provide new estimates for the nucleon sigma-term.

Insights into the space-like structure of the pion are achieved.

Abstract

Three instances are discussed in which results produced by chiral perturbation theory can be reliably pushed to high space-like values of transferred momenta: 1. nuclear interactions, 2. nucleon sigma-term and 3. space-like structure of the pion