a tmqcd mixed-action approach to flavour physics

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ID: 252760
2018
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Abstract
We discuss a mixed-action approach in which sea quarks are regularised using non-perturbatively O(a) improved Wilson fermions, while a fully-twisted tmQCD action is used for valence quarks. In this setup, automatic O(a) improvement is preserved for valence observables, apart from small residual O(a) effects from the sea. A strategy for matching sea and valence is set up, and carried out for Nf = 2 + 1 CLS ensembles with open boundary conditions at several simulation points. The scaling of basic light-quark observables such as the pseudoscalar meson decay constant is studied, as well as the isospin splitting of pseudoscalar meson masses.
Reference Key
gregorio2018epja Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Herdoíza Gregorio;Pena Carlos;Preti David;Romero José Ángel;Ugarrio Javier
Journal utilitas mathematica
Year 2018
DOI
10.1051/epjconf/201817513018
URL
https://doi.org/10.1051/epjconf/201817513018
Keywords
physics

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