The Isgur-Wise function on the lattice

Details The Isgur-Wise function on the lattice The Isgur-Wise function on the lattice

2001-09-13

arxiv.org/abs/hep-lat/0109006v2

Nucl.Phys.Proc.Suppl. 106 (2002) 373-375

Physics

High Energy Physics

High Energy Physics - Lattice

Lattice 2001 proc., 3 pages, 3 figures

Scientific paper

The h+, h_A1 form factors for the semi-leptonic B->D and B->D* decays are evaluated in quenched lattice QCD with beta=6.2. The action and the operators are fully O(a) non-perturbatively improved. The Isgur-Wise function is evaluated and fitted to extract its slope; the latter is found to be rho^2=1.1(2)(3) from the B->D* decay and rho^2=1.0(2)(3) from the B->D decay. The form factors ratios R_1, R_2 are evaluated and found to be in agreement with experimental determinations.

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