Chiral Analysis of the Nucleon Mass and Sigma Commutator
Author:
Shiryo Owa, Derek B. Leinweber, Anthony W. Thomas, Xuan-Gong Wang
Keyword:
High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), High Energy Physics - Lattice (hep-lat), Nuclear Theory (nucl-th)
journal:
ADP-23-24/T1233
date:
2023-10-18 16:00:00
Abstract
Methods for describing the light quark mass dependence of the nucleon mass calculated in lattice QCD are compared. All preserve the leading and next-to-leading non-analytic behavior of QCD. It is found that the low-energy coefficients describing the mass in the SU(2) limit and the slope in pion mass squared are independent of the method used. Results for the masses of the other members of the baryon octet are also presented. Finally, results are presented for the pion-nucleon sigma commutator, based upon recent data from the CLS Collaboration