Nucleon structure from lattice QCD - recent achievements and perspectives

TL;DR

This paper reviews recent progress in lattice QCD simulations for understanding nucleon structure, focusing on key quantities like the axial charge, parton distributions, and sigma-terms, highlighting challenges and future perspectives.

Contribution

It summarizes recent achievements in lattice QCD related to nucleon structure and discusses ongoing challenges and future directions in the field.

Findings

Improved calculations of nucleon axial charge and parton momentum fraction.

Progress in computing nucleon sigma-terms and disconnected quark loops.

Identification of key challenges in lattice QCD simulations for hadron structure.

Abstract

We present recent developments in lattice QCD simulations as applied in the study of hadron structure. We discuss the challenges and perspectives in the evaluation of benchmark quantities such as the nucleon axial charge and the isovector parton momentum fraction, as well as, in the computation of the nucleon $\sigma$-terms, which involve the calculation of disconnected quark loop contributions.