1994/02/23 by C.R. Allton, C. R. Allton, M. Crisafulli +20 · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph
paper · pdf · doi:10.1016/0370-2693(94)91325-0
published as Phys.Lett. B326 (1994) 295-302 · 12 pages, LaTex, 3 figs. (figures not included; available upon request from [email protected]) ROME prep. 94/981, 18 February 1994
arxiv created 1994/02/23 · openalex publication_date 1994/05/01 · arxiv updated 2009/11/30 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28
We present a calculation of fB 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 fBstatic=(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 fstatBs/fstatBd=1.11(3). A comparison of our results with other calculations of the same quantity is made.