Hadron spectra and Delta_{mix} from overlap quarks on a HISQ sea

TL;DR

This paper investigates mixed-action hadron spectra and decay constants using overlap valence quarks on HISQ sea configurations, focusing on determining the mixed-action parameter Delta_{mix} across multiple lattice spacings.

Contribution

It provides new results on the mixed-action parameter Delta_{mix} using overlap valence quarks on HISQ sea configurations at various lattice spacings.

Findings

Determined Delta_{mix} on three lattice spacings.

Analyzed hadron spectra and decay constants with physical charm and strange masses.

Studied effects of mixed-action approach on chiral properties.

Abstract

We present results of our continuing study on mixed-action hadron spectra and decay constants using overlap valence quarks on MILC's 2+1+1 flavor HISQ gauge configurations. This study is carried out on three lattice spacings, with charm and strange masses tuned to their physical values, and with m_l/m_s = 1/5. We present results of an ongoing determination of the mixed-action parameter Delta_{mix}, which enters into chiral formulae for the masses and decay constants.