We present the status of an ongoing project aimed at the inclusion of isospin-breaking corrections arising from the non-degeneracy of the light quark masses and electromagnetic interactions in calculations of the low-lying octet and decuplet baryon masses. Our ultimate goal is to perform a precision determination of the lattice scale including isospin-breaking effects. We apply the perturbative formalism to isospin-symmetric Nf=2+1 CLS ensembles. We show results on baryon masses up to leading order in isospin-breaking corrections on two ensembles with mπ≈290MeV and mπ≈215MeV at a lattice spacing of a≈0.076fm.
@article{arxiv.2212.07176,
title = {Setting the Scale Using Baryon Masses with Isospin-Breaking Corrections},
author = {Alexander M. Segner and Andrew D. Hanlon and Andreas Risch and Hartmut Wittig},
journal= {arXiv preprint arXiv:2212.07176},
year = {2022}
}