CKM matrix element Vcb in a QCD Potential model

Abstract

We study the slope ${\rho }^2$ and curvature $C$ of Isgur Wise function for the heavy-light mesons in general with particular emphasis on $B$ meson in a QCD Potential model. The IW function is then used to compute the partial decay width and branching ratio for the semileptonic decay of $\left(B^0\to D,D^{\ast }l\nu \right)$. The computed value of the CKM element $|V_{cb}|=0.040$ is found to be in agreement with the available data.

Comments: 9 pages, 1 figure