Main Image
Volume 334 - The 36th Annual International Symposium on Lattice Field Theory (LATTICE2018) - Weak Decays and Matrix Elements
Heavy-quark physics with a tmQCD valence action
A. Bussone,* S. Chaves, G. Herdoiza, C. Pena, D. Preti, J.Á. Romero, J. Ugarrio on behalf of the ALPHA collaboration
*corresponding author
Full text: pdf
Published on: 2019 May 29
We introduce a mixed-action approach based on CLS ensembles, where a valence $N_f$=2+1+1 Twisted Mass QCD action is combined with the $N_f$=2+1 non-perturbatively O$(a)$-improved Wilson sea sector. We show that for maximally twisted valence quarks, the automatic O$(a)$-improvement of this set-up holds up to lattice artifacts coming from sea quark mass effects. Furthermore, we introduce a three-dimensional Gradient Flow smearing in order to tame the signal to noise ratio problem.
Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.