Scale Setting from a Mixed Action with Twisted Mass Valence Quarks
| Autor: | Saez, Alejandro, Conigli, Alessandro, Frison, Julien Francois, Herdoiza, Gregorio, Pena, Carlos, Ugarrio, Javier |
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| Rok vydání: | 2022 |
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| Zdroj: | Proceedings of Science / International School for Advanced Studies (LATTICE2022), 357 (2023). doi:10.22323/1.430.0357 39th International Symposium on Lattice Field Theory, Lattice 2022, Bonn, Germany, 2022-08-08-2022-08-13 |
| DOI: | 10.22323/1.430.0357 |
| Popis: | 39th International Symposium on Lattice Field Theory, Lattice 2022, Bonn, Germany, 8 Aug 2022 - 13 Aug 2022; Proceedings of Science / International School for Advanced Studies (LATTICE2022), 357 (2023). doi:10.22323/1.430.0357 We present preliminary results for a scale setting procedure based on a mixed action strategy consisting of Wilson twisted mass valence fermions at maximal twist on CLS ensembles with $N_f=2+1$ flavours of O($a$)-improved Wilson sea quarks. Once the matching of valence and sea quark masses is performed, universality tests are carried out by comparing the continuum-limit results of the mixed action setup to those of the regularisation based solely on O($a$)-improved Wilson fermions. The scale setting uses the pion and kaon decay constants, in units of the gradient flow scale $t_0$, obtained from combining computations with the unitary Wilson action and the mixed action. The proper isolation of ground states as well as the continuum-chiral extrapolations are evaluated through model variation techniques. An update on the determination of $t_0$ will be presented. Published by SISSA, Trieste |
| Databáze: | OpenAIRE |
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