A one parameter representation for the Isgur-Wise function

Abstract

We use a $1S$ lattice QCD heavy-light wavefunction to generate a single parameter, model independent description of the Isgur-Wise function. Using recent data we find the zero-recoil slope to be ${\xi }^{\prime }(1)=-1.16\pm 0.17$, while the second derivative turns out to be ${\xi }^{\prime \prime }(1)=2.64\pm 0.74$.

Comments: Latex (uses epsf macro), 7 pages of text, 2 postscript figures included.