Updated Analysis of $a_2/a_1$ in Exclusive B Decays

Abstract

Using recent experimental data and various theoretical calculations on form factors, we reanalyze the effective parameters $a_1$ and $a_2$ and their ratio.

Comments: 6 pages, presented by K.-C. Yang at ``The Fourth International Workshop on Particle Physics Phenomenology", Kaohsiung, Taiwan, 18-21 January 1998