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arXiv · hep-lat/9312037

Computation of the Heavy-Light Decay Constant with NRQCD

Shoji Hashimoto
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Abstract

Non-relativistic QCD is applied for a lattice computation of the heavy-light meson decay constant in quenched approximation at $β=6.0$. Clear signals are obtained for the ground state at large times in the correlators, allowing a reliable extraction of the decay constant. Estimating the current renormalization factor by the tadpole improvement procedure, we find $f_{B}=$ 164(17) MeV for the $B$ meson with $a^{-1}=$ 2.3 GeV, while an extrapolation to the static limit yields $f_{B}^{\mbox{static}}=$ 247(26) MeV.

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Shoji Hashimoto. 1993-12-08. Computation of the Heavy-Light Decay Constant with NRQCD. https://doi.org/10.1016/0920-5632(94)90412-x

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