Precision Scale Setting in Lattice QCD Using Baryon Spectra and Decay Constants
J.S. Yoo*,
J.H. Ee,
S. Park,
R. Gupta,
T. Bhattacharya and
S. Mondal*: corresponding author
Abstract
We present a study of the meson and baryon spectrum on thirteen 2+1-flavor Wilson–clover gauge ensembles (NME). Using pseudoscalar decay constants and gradient-flow observables, we determine the physical values of the flow scales $t_0^{\rm phy}$ and $w_0^{\rm phy}$ and the ratio $(f_K/f_\pi)^{\rm phy}$. Octet and decuplet baryon masses are analyzed using heavy-baryon chiral perturbation theory. For the octet sector, NNLO fits are preferred over NLO, while for the $\Omega$ baryon the two descriptions are statistically indistinguishable. No evidence of topological freezing is observed.
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