Matching the Bare and MSbar Charm Quark Masses Using Weak Coupling Simulations

C. McNeile; C. T. H. Davies; E. Dalgic; E. Follana; G. P. Lepage; H. D. Trottier; I. F. Allison; J. Shigemitsu (for the HPQCD collaboration); J. Wu; K. Y. Wong

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Matching the Bare and MSbar Charm Quark Masses Using Weak Coupling Simulations

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arxiv 0810.0285 v1 pith:XQU4YJRR submitted 2008-10-02 hep-lat

Matching the Bare and MSbar Charm Quark Masses Using Weak Coupling Simulations

I. F. Allison , K. Y. Wong , C. T. H. Davies , C. McNeile , H. D. Trottier , E. Dalgic , J. Wu , E. Follana

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R. R. Horgan G. P. Lepage J. Shigemitsu (for the HPQCD collaboration)

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keywords matchingquarksimulationsbarecharmcouplingdeterminationlattice

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We provide a new determination of the charm quark mass using the Highly Improved Staggered Quark (HISQ) action, finding m_c(3 GeV) = 0.983(23) GeV. Our determination makes extensive use of second order lattice perturbation theory in matching the bare lattice mass to the MSbar scheme. This matching utilises both traditional diagrammatic perturbation theory and weak coupling simulations. The second of these techniques allows us to extract perturbative coefficients from Monte-Carlo simulations and the process of doing this is laid out in some detail here.

Matching the Bare and MSbar Charm Quark Masses Using Weak Coupling Simulations

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