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- Eduardo Follana, C. T. H. Davies, G. Peter Lepage, Junko Shigemitsu
- Physical review letters
- 2008

We determine D and D(s) decay constants from lattice QCD with 2% errors, 4 times better than experiment and previous theory: f(D(s))=241(3) MeV, f(D)=207(4) MeV, and fD(s))/f(D)=1.164(11). We also… (More)

We calculate the critical value of the hopping parameter, κc, in Lattice QCD with Wilson fermions, to two loops in perturbation theory. This quantity is an additive renormalization; as such, it is… (More)

We compute the one-loop lattice renormalization of the two-quark operators ψ̄Γψ, where Γ denotes the generic Dirac matrix, for the lattice formulation of QCD using the overlap-Dirac operator. We also… (More)

- C. T. H. Davies, Craig McNeile, +6 authors Helen Trottier
- Physical review letters
- 2010

By using a single formalism to handle charm, strange, and light valence quarks in full lattice QCD for the first time, we are able to determine ratios of quark masses to 1%. For m(c)/m(s) we obtain… (More)

- C. T. H. Davies, Eduardo Follana, +23 authors Joseph V. Simone
- Physical review letters
- 2004

The recently developed Symanzik-improved staggered-quark discretization allows unquenched lattice-QCD simulations with much smaller (and more realistic) quark masses than previously possible. To test… (More)

- J. F. Cariñena, Jesús Clemente-Gallardo, Eduardo Follana, José M. Gracia-Bond́ıa, Alejandro Rivero, Joseph C. Várilly
- 1999

We address one of the open problems in quantization theory recently listed by Rieffel. By developing in detail Connes’ tangent groupoid principle and using previous work by Landsman, we show how to… (More)

- Eduardo Follana, Andre van der Hart, C. T. H. Davies
- Physical review letters
- 2004

We study various improved staggered quark Dirac operators on quenched gluon backgrounds in lattice QCD generated using a Symanzik-improved gluon action. We find a clear separation of the spectrum… (More)

We compute the ratio between the scale ΛL associated with a lattice formulation of QCD using the overlap-Dirac operator, and Λ MS . To this end, the one-loop relation between the lattice coupling g0… (More)

- C. Davies, Abigail M. Gray, +8 authors Matthew Wingate
- 2002

We describe the first lattice determination of the strong coupling constant with 3 flavors of dynamical quarks. The method follows previous analyses in using a perturbative expansion for the… (More)

We compute the one-loop lattice renormalization of the two-quark operators ψ̄Γψ, where Γ denotes the generic Dirac matrix, for the lattice formulation of QCD using the overlap-Dirac operator. We also… (More)