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

Dougall, A.; Maynard, C.M. and McNeile, C. (2006) The effect of sea quarks on the mass of the charm quark from lattice QCD. Journal of High Energy Physics (01). Article Number: 171. ISSN 1029-8479

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Abstract

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.

Item Type:Article
Additional Information:LTH 662; arXiv Number: arXiv:hep-lat/0508033v2. Published 31 January 2006. 25 pages.
Uncontrolled Keywords:Lattice QCD; IMPROVED WILSON FERMIONS; ONE-LOOP ORDER; NONPERTURBATIVE RENORMALIZATION; PERTURBATION-THEORY; DECAY CONSTANTS; HEAVY QUARKS; GAUGE-THEORY; DYNAMICAL FERMIONS; FERMILAB ACTION; LIGHT
Subjects:Q Science > QC Physics
Departments, Research Centres and Related Units:Academic Faculties, Institutes and Research Centres > Faculty of Science > Department of Mathematical Sciences
DOI:10.1088/1126-6708/2006/01/171
Publisher's Statement:Copyright © Institute of Physics and IOP Publishing Limited 2008
Related URLs:
Refereed:Yes
Status:Published
ID Code:410
Deposited On:18 Aug 2008 12:23
Last Modified:20 May 2011 14:59

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