COMPUTATION OF THE HEAVY-LIGHT DECAY CONSTANT WITH NRQCD

被引:2
作者
HASHIMOTO, S [1 ]
机构
[1] HIROSHIMA UNIV,DEPT PHYS,HIROSHIMA 724,JAPAN
关键词
D O I
10.1016/0920-5632(94)90412-X
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
Non-relativistic QCD is applied for a lattice computation of the heavy-light meson decay constant in quenched approximation at beta = 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)static = 247(26) MeV.
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页码:441 / 443
页数:3
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