Matching of $N_f=2+1$ CLS ensembles to a tmQCD valence sector
Andrea Bussone, Gregorio Herdo\'iza, Carlos Pena, David Preti, Jos\'e, \'Angel Romero, Javier Ugarrio
TL;DR
This paper discusses a mixed action approach combining twisted mass QCD valence quarks with $N_f=2+1$ Wilson sea quarks, focusing on mass matching procedures and continuum-limit scaling of meson observables.
Contribution
It introduces and compares two procedures for matching sea and valence quark masses in a mixed action lattice QCD setup.
Findings
Continuum-limit scaling of pseudoscalar meson observables is analyzed.
Comparison of two mass matching procedures shows their effects on physical results.
The mixed action approach demonstrates consistent scaling behavior.
Abstract
A mixed action composed of valence quark flavours regularized with a fully-twisted tmQCD action and of flavours of non-perturbatively -improved Wilson sea quarks is described. Two procedures for the matching of sea and valence quark masses are discussed. We report about a comparison of the continuum-limit scaling of pseudoscalar meson observables and of quark masses using the sea and valence actions.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Particle physics theoretical and experimental studies · High-Energy Particle Collisions Research