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

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

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 u...

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Veröffentlicht in:arXiv.org 2008-10
Hauptverfasser: Allison, I F, Wong, K Y, Davies, C T H, McNeile, C, Trottier, H D, Dalgic, E, J Wu, Follana, E, Horgan, R R, Lepage, G P, Shigemitsu, J, the HPQCD collaboration
Format: Artikel
Sprache:eng
Schlagworte:
Charm (particle physics)
Computer simulation
Coupling
Lattice matching
Monte Carlo simulation
Perturbation theory
Quarks
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Zusammenfassung: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.
ISSN:2331-8422