On the consistency of recent QCD lattice data of the baryon ground-state masses

TL;DR

This paper demonstrates that a single set of chiral Lagrangian parameters can accurately describe baryon ground-state masses across multiple lattice QCD groups, indicating high consistency among different simulations.

Contribution

It provides a unified parameter set that fits baryon masses from various lattice QCD data, showing remarkable consistency across different groups and quark masses.

Findings

Unified parameter set fits multiple lattice data sets

Accurate reproduction of HSC group results without direct inclusion

Potential to determine all low-energy parameters at N$^3$LO with future data

Abstract

In our recent analysis of lattice data of the BMW, LHPC and PACS-CS groups we determined a parameter set of the chiral Lagrangian that allows a simultaneous description of the baryon octet and decuplet masses as measured by those lattice groups. The results on the baryon spectrum of the HSC group were recovered accurately without their inclusion into our 6 parameter fit. We show that the same parameter set provides an accurate reproduction of the recent results of the QCDSF-UKQCD group probing the baryon masses at quite different quark masses. This shows a remarkable consistency amongst the different lattice simulations. With even more accurate lattice data in the near future it will become feasible to determine all low-energy parameters relevant at N$^3$LO.