Lattice 2024

Effective mass-improvement of heavy valence Wilson quarks

29 Jul 2024, 11:15

20m

Talk Theoretical Developments Theoretical developments

Speaker

Patrick Fritzsch (Trinity College Dublin)

Description

We extend an established strategy to non-perturbatively determine mass-improvement coefficients for heavy valence Wilson fermions in $N_f=3$ massless QCD to effectively cancel higher-order mass-dependent cutoff effects. Using Schrödinger functional simulations in physical volumes of $L\simeq 0.25,0.5$fm we test our strategy by simulating relativistic b-quarks at lattice spacings of $0.008\le a/\mathrm{fm}\le 0.021$, and compare it to results obtained with the traditional method for tuning the b-quark hopping parameter. The new strategy significantly enhances the window for which a predominantly $O(a^2)$ scaling behaviour of physical quantities is observed, comparable to that of massless sea quarks.

Presentation materials

Fritzsch_Lat2024.pdf