Determination of the light, strange and charm quark masses using twisted mass fermions

TL;DR

This paper determines the masses of light, strange, and charm quarks using twisted mass fermion ensembles with multiple lattice spacings and physical pion mass, analyzing meson and baryon sectors to improve accuracy.

Contribution

It provides new quark mass estimates using $N_f=2+1+1$ twisted mass fermions at multiple lattice spacings, including physical pion mass, and compares meson and baryon sector results.

Findings

Quark masses consistent across sectors within systematic errors.

Use of ensembles at physical pion mass improves real-world relevance.

Systematic error includes sector differences.

Abstract

We present results for the light, strange and charm quark masses using $N_f=2+1+1$ twisted mass fermion ensembles at three values of the lattice spacing, including two ensembles simulated with the physical value of the pion mass. The analysis is done both in the meson and baryon sectors. The difference in the mean values found in the two sectors is included as part of the systematic error. The presentation is based on the work of Ref. [1], where more details can be found.