PENGUIN DECAYS OF B-MESON

The theory of loop induced rare B decays is reviewed. Both electromagn etic penguin processes and gluon mediated penguin processes are discus sed. After considering b --> s gamma and b --> se(+)e(-) decays, purel y hadronic modes like B --> K phi are estimated. Constraints on the Hi ggs sector of SUSY theory from b --> s gamma is discussed. CP violatio n in charged B Decays is reviewed.