Volume 466 - The 41st International Symposium on Lattice Field Theory (LATTICE2024) - Standard Model Parameters
Scale setting from a combination of lattice QCD formulations with Wilson and Wilson twisted mass valence quarks
A. Saez*, A. Conigli, G. Herdoiza and C. Pena
*: corresponding author
Full text: pdf
Pre-published on: February 06, 2025
Published on: —
Abstract
We report about an update of a scale setting procedure employing a
mixed action setup consisting of $N_f=2+1$ flavors of $\mathcal{O}(a)$-improved
Wilson sea quarks, based on CLS ensembles, and Wilson twisted mass
valence quarks at maximal twist.
We employ as external input
isoQCD masses and decay constants of pions and kaons, and use the gradient
flow scale $t_0$ as an intermediate scale.
The analysis includes ensembles in the vicinity of the physical point and five values of the lattice spacing down
to $a\approx0.038$ fm.
The determination of $t_0$ is carried out using three
approaches: the unitary setup where Wilson quarks are used in the sea
and valence sectors, the mixed action setup with Wilson twisted mass
valence quarks, and by combining the data from the two previous
cases.
We observe that this combination leads to an improved control over the
systematic uncertainties.
DOI: https://doi.org/10.22323/1.466.0297
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