Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2006-12-27
Prog.Theor.Phys.117:275-303,2007
Physics
High Energy Physics
High Energy Physics - Lattice
30 pages, 25 figures, typos corrected
Scientific paper
10.1143/PTP.117.275
We compute the B^*B\pi coupling \hat{g}_{\infty} for static heavy-light meson using all-to-all propagators. It is shown that low-mode averaging with 100 low-lying eigenmodes indeed improves the signal for the 2-point and 3-point functions for heavy-light meson significantly. Our study suggests that the all-to-all propagator will be a very efficient method for high precision computation of the B^*B\pi coupling especially in unquenched QCD where the number of configurations is limited.
Matsufuru Hideo
Negishi Satoru
Onogi Tetsuya
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