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

Dougall, A, Maynard, CM and McNeile, C (2005) The effect of sea quarks on the mass of the charm quark from Lattice QCD. JHEP, 0601 (01). 171-.

PDF 0508033v2.pdf - Unspecified Download (299kB)

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:	Added NP analysis of quenched data, corrected error in PCAC RGI mass, updated strange quark mass discussion and references, unified notation and corrected typos. No change in final result. Version accepted for publication in JHEP
Uncontrolled Keywords:	hep-lat, hep-lat
Subjects:	?? QC ??
Divisions:	Faculty of Science and Engineering > School of Physical Sciences > Mathematical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	18 Aug 2008 11:23
Last Modified:	17 Dec 2022 00:11
DOI:	10.1088/1126-6708/2006/01/171
Publisher's Statement :	Copyright © Institute of Physics and IOP Publishing Limited 2008
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/410