Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2000-11-03
Nucl.Phys.Proc.Suppl.94:346-349,2001
Physics
High Energy Physics
High Energy Physics - Lattice
Lattice 2000 (Heavy Quark Physics). 4 pages, 2 figures
Scientific paper
10.1016/S0920-5632(01)00923-9
We present results for pseudoscalar decay constants of heavy-light mesons using both quenched and N_f = 2 dynamical fermion configurations. A variety of fermion actions is investigated : Wilson, nonperturbative clover, and fat-link clover. For heavy quarks the Fermilab formalism is applied. In the quenched approximation, results with the nonperturbatively improved clover action of the Alpha collaboration allow us to study the systematic error of the continuum extrapolation from the Wilson action. In addition, we use quenched configurations to explore the effects of fattening. The lessons from the quenched analyses are then applied to data with dynamical fermions, where both Wilson and fat-link clover actions have been used. This allows us to attempt a continuum extrapolation of the dynamical results.
Bernard Claude
Datta Saiti
DeTar Carleton
Gottlieb Steven
Heller Urs M.
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