Lattice computation of the strange quark mass in QCD

TL;DR

This paper determines the strange quark mass in QCD using lattice techniques, emphasizing non-perturbative renormalization and connecting hadronic and perturbative regimes for precise results.

Contribution

It introduces a non-perturbative renormalization method for the strange quark mass and links lattice results with the MSbar scheme through finite-size scaling.

Findings

Non-perturbative renormalization of quark mass achieved

Connection established between hadronic and perturbative regimes

Summary of lattice computations with dynamical quarks included

Abstract

We present a determination of the strange quark mass using lattice QCD. Particular focus is put on the definition and renormalization of the mass. The latter is done non-perturbatively, using a recursive finite-size scaling technique. The hadronic regime of QCD, where the kaon mass is used as input of the calculation, is connected with the perturbative regime, where the strange quark mass can be translated into the MSbar scheme. A summary plot of the present lattice computations using dynamical (sea) quarks is included.