Wilson flow and scale setting from lattice QCD
V.G. Bornyakov, R. Horsley, R. Hudspith, Y. Nakamura, H. Perlt, D., Pleiter, P.E.L. Rakow, G. Schierholz, A. Schiller, H. St\"uben, J.M. Zanotti
TL;DR
This paper determines the Wilson flow scales t0 and w0 in lattice QCD with 2+1 flavors, using improved fermions and multiple lattice spacings to enable a controlled continuum extrapolation.
Contribution
It provides a phenomenological determination of Wilson flow scales with controlled approach to the physical point using improved fermions and multiple lattice spacings.
Findings
Values of t0 and w0 at the physical point
Continuum extrapolated results for Wilson flow scales
Methodology for controlled approach to physical quark masses
Abstract
We give a determination of the phenomenological value of the Wilson (or gradient) flow scales t0 and w0 for 2+1 flavours of dynamical quarks. The simulations are performed keeping the average quark mass constant, which allows the approach to the physical point to be made in a controlled manner. O(a) improved clover fermions are used and together with four lattice spacings this allows the continuum extrapolation to be taken.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research · Particle physics theoretical and experimental studies