We present quenched results for B meson decay constants using NRQCD b quarks and O(a) tadpole imp... more We present quenched results for B meson decay constants using NRQCD b quarks and O(a) tadpole improved clover light quarks. For the first time, one-loop matching factors between lattice and continuum currents are incorporated through O(α/M) taking operator mixing fully into account. This includes an important O(α a) discretization correction to the heavy-light axial vector current. We find f B = 147(11)(+8 −12)(9)(6)MeV and f Bs /f B = 1.20(4)(+4 −0).
We present quenched results for B meson decay constants using NRQCD b quarks and O(a) tadpole imp... more We present quenched results for B meson decay constants using NRQCD b quarks and O(a) tadpole improved clover light quarks. For the first time, one-loop matching factors between lattice and continuum currents are incorporated through O(α/M) taking operator mixing fully into account. This includes an important O(α a) discretization correction to the heavy-light axial vector current. We find f B = 147(11)(+8 −12)(9)(6)MeV and f Bs /f B = 1.20(4)(+4 −0).
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Papers by Ubay Dillah