Semi-Leptonic B Decay

Abstract

The definitions and properties of elastic and inelastic Isgur-Wise form factors are reviewed. The nature of the "missing" exclusive semi-leptonic decay fraction is identified. The role that completeness sum rules play in relating form factors, spectroscopy, and model building is outlined.

Comments: Latex2.09, uses sprocl.sty and epsf.sty. 10 pages with 3 postscript files included. Talk presented at the Conference on B Physics and CP Violation, March 24-27, 1997, Honolulu, Hawaii