Charm quark mass determination from Nf = 2+1 QCD with Wilson fermions

28 Jul 2021, 13:45
15m
Oral presentation Standard Model Parameters Standard Model Parameters

Speaker

Sjoerd Bouma (Universität Erlangen-Nürnberg (FAU))

Description

We have recently performed a determination of the charm quark mass on $N_f = 2+1$ CLS ensembles of non-perturbatively improved Wilson fermions. The extrapolation to the chiral and continuum limits is performed using 5 lattice spacings ranging roughly from 0.09 down to 0.04 fm and pion masses from 420 MeV to 130 MeV. The spatial extent of the ensembles is generally at least $4 / M_\pi$. We will present the preliminary results of this analysis for the renormalization-group invariant charm quark mass and the ratio $m_c/m_s$. In this talk, we will discuss the various analysis strategies we considered, including the fitting procedure, corrections for the correlations in the data, and the chiral-continuum extrapolation.

Primary author

Sjoerd Bouma (Universität Erlangen-Nürnberg (FAU))

Co-authors

Gunnar Bali (Universität Regensburg) Sara Collins (University of Regensburg) Wolfgang Soeldner (University of Regensburg)

Presentation materials