Preliminary results from the BABAR experiment on charmless B decays to
charged pions or kaons, and the measurement of the B -> J/psi K* decay
amplitudes are presented. The data sample, collected at the asymmetric-energy
B-factory PEP-II at SLAC, comprises a total number of 22.7 million Y(4S)
decays, corresponding to an integrated on-resonance luminosity of approximately
21 fb-1. We measure the following CP-averaged branching fractions:
BR(B -> pi+pi-) = (4.1 +- 1.0(stat) +- 0.7(sys))xE-6 BR(B -> K+pi-) = (16.7
+- 1.6(stat) +1.2-1.7(sys))xE-6
and an upper limit of BR(B -> K+K-) < 2.5xE-6, at 90% confidence limit. The
measurement of the J/psi K* decay amplitudes results in R_\perp = 0.160 +-
0.032(stat) +- 0.036(sys), and reveals a dominant longitudinal component. The
phase of the longitudinal amplitude shows evidence for non-vanishing final
state interaction.Comment: 13 pages, 8 postscript figures, submitted to Proceedings for BCP
