We present work designed to compute baryon masses on Nf=2+1 CLS ensembles including isospin-breaking effects due to non-degenerate light quark masses and electromagnetic interactions. These effects are determined at leading order via a perturbative expansion around the iso-symmetric theory. We furthermore apply a group-theoretical operator construction for the various interpolators describing the different members of the baryon octet and decuplet based on a classification by spin, parity, and flavor content.
@article{arxiv.2112.08262,
title = {Isospin-breaking Effects in Octet and Decuplet Baryon Masses},
author = {Alexander M. Segner and Andrew D. Hanlon and Renwick J. Hudspith and Andreas Risch and Hartmut Wittig},
journal= {arXiv preprint arXiv:2112.08262},
year = {2021}
}