Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2002-02-28
Nucl.Phys.B637:293-310,2002
Physics
High Energy Physics
High Energy Physics - Lattice
21 pages, 10 figures
Scientific paper
10.1016/S0550-3213(02)00462-5
The form factors for the semi-leptonic B->D and B->D* decays are evaluated in quenched lattice QCD at two different values of the coupling, beta=6.0 and 6.2. The action and the operators are fully O(a) non-perturbatively improved. The slope of the Isgur-Wise function is evaluated, and found to be rho^2=0.83^{+15+24}_{-11-1} (quoted errors are statistical and systematic respectively). Ratios of form factors are evaluated and compared to experimental determinations.
Bowler Kenneth C.
Douglas Geoffrey G.
Kenway Richard D.
Lacagnina G. N.
Maynard Christopher M.
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