paper

Short-distance charmonium correlator on the lattice with Möbius domain-wall fermion and a determination of charm quark mass

arXiv:1606.01002 · doi:10.1103/PhysRevD.94.054507

Abstract

We calculate charmonium correlators on the lattice with 2+1-flavors of sea quarks and charm valence quark both described by the Möbius domain-wall fermion. Temporal moments of the correlators are calculated and matched to perturbative QCD formulae to extract the charm quark mass and strong coupling constant . Lattice data at three lattice spacings, 0.044, 0.055, and 0.080~fm, are extrapolated to the continuum limit. The correlators in the vector channel are confirmed to be consistent with the experimental data for , while the pseudo-scalar channel is used to extract and . We obtain = 1.003(10)~GeV and = 0.253(13). Dominant source of the error is the truncation of perturbative expansion at .

32 pages, 10 figures, 10 tables

References in corpus (14)

Cited by in corpus (41)