The effect of sea quarks on the mass of the charm quark from Lattice QCD

Details The effect of sea quarks on the mass of the charm quark from Lattice QCD The effect of sea quarks on the mass of the charm quark from Lattice QCD

2005-08-31

arxiv.org/abs/hep-lat/0508033v2

JHEP 0601 (2006) 171

Physics

High Energy Physics

High Energy Physics - Lattice

Added NP analysis of quenched data, corrected error in PCAC RGI mass, updated strange quark mass discussion and references, un

Scientific paper

10.1088/1126-6708/2006/01/171

We compute the mass of the charm quark using both quenched and dynamical lattice QCD calculations. We examine the effects of mass dependent lattice artifacts by comparing two different formalisms for the heavy quarks. We take the continuum limit of the charm mass in quenched QCD by extrapolating from three different lattice spacings. At a fixed lattice spacing, the mass of the charm quark is compared between quenched QCD and dynamical QCD with a sea quark mass around strange. In the continuum limit of quenched QCD, we find m_c(m_c)=1.29(7)(13) GeV. No evidence was seen for unquenching.

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