Bmeson leptonic decay constant with quenched lattice NRQCD
نویسندگان
چکیده
منابع مشابه
B meson leptonic decay constant with quenched lattice NRQCD ( JLQCD Collaboration )
We present a lattice NRQCD study of the B meson decay constant in the quenched approximation with emphasis given to the scaling behavior. The NRQCD action and the heavy-light axial current we use include all terms of order 1/M and the perturbative O(αsa) and O(αs/M) corrections. Using simulations at three value of couplings β=5.7, 5.9 and 6.1 on lattices of size 123×32, 163×48 and 243×64, we fi...
متن کاملv 1 3 1 M ay 1 99 9 HUPD - 9904 B meson leptonic decay constant with quenched lattice NRQCD ( JLQCD Collaboration )
We present a lattice NRQCD study of the B meson decay constant in the quenched approximation with emphasis given to the scaling behavior. The NRQCD action and the heavy-light axial current we use include all terms of order 1/M and the perturbative O(α s a) and O(α s /M) corrections. Using simulations at three value of couplings β=5.7, 5.9 and 6.1 on lattices of size 12 3 ×32, 16 3 ×48 and 24 3 ...
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We present a quenched lattice calculation of heavy-light meson decay constants, using non-relativistic (NRQCD) heavy quarks in the mass region of the b quark and heavier, and clover-improved light quarks. The NRQCD Hamiltonian and the heavy-light current include the corrections at first order in the expansion in the inverse heavy quark mass. We study the dependence of the decay constants on the...
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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 fB = 164(17) MeV for the B meson...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2000
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.61.074501