28 July 2024 to 3 August 2024
Europe/London timezone

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 $L\simeq0.25,0.5\,$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.

Primary authors

Jochen Heitger (University of Muenster, ITP) Patrick Fritzsch (Trinity College Dublin) Simon Kuberski (CERN)

Presentation materials