%0 Journal Article
%T Analyticity and the Isgur-Wise Function
%A Adam F. Falk
%A Michael Luke
%A Mark B. Wise
%J Physics
%D 1992
%I arXiv
%R 10.1016/0370-2693(93)90892-L
%X We reconsider the recent derivation by de Rafael and Taron of bounds on the slope of the Isgur-Wise function. We argue that one must be careful to include cuts starting below the heavy meson pair production threshold, arising from heavy quark-antiquark bound states, and that if such cuts are properly accounted for then no constraints may be derived.
%U http://arxiv.org/abs/hep-ph/9211222v1