We present a calculation of f{hook}B in the static limit, obtained by numerical simulation of quenched QCD, at β=6.2 on a 183 × 64 lattice, using the SW-Clover quark action. The decay constant has been extracted by studying heavy (static)-light correlation functions of different smeared operators, on a sample of 220 gauge field configurations. We have obtained f{hook}Bstatic=(290±15±45) MeV, where the first error comes from the uncertainty in the determination of the matrix element and the second comes from the uncertainty in the lattice spacing. We also obtain MBs-MBd=(70±10) MeV and f{hook}Bsstat/f{hook}Bd stat=1.11 (3). A comparison of our results with other calculations of the same quantity is made. © 1994.
Allton, C., Crisafulli, M., Lubicz, V., Martinelli, G., Salina, G., Vladikas, A., et al. (1994). A high statistics lattice calculation of using the clover action. PHYSICS LETTERS. SECTION B, 326(3-4), 295-302 [10.1016/0370-2693(94)91325-0].
A high statistics lattice calculation of using the clover action
RAPUANO, FEDERICO;
1994
Abstract
We present a calculation of f{hook}B in the static limit, obtained by numerical simulation of quenched QCD, at β=6.2 on a 183 × 64 lattice, using the SW-Clover quark action. The decay constant has been extracted by studying heavy (static)-light correlation functions of different smeared operators, on a sample of 220 gauge field configurations. We have obtained f{hook}Bstatic=(290±15±45) MeV, where the first error comes from the uncertainty in the determination of the matrix element and the second comes from the uncertainty in the lattice spacing. We also obtain MBs-MBd=(70±10) MeV and f{hook}Bsstat/f{hook}Bd stat=1.11 (3). A comparison of our results with other calculations of the same quantity is made. © 1994.
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