Puzzles in $B$ physics

Abstract

I discuss some puzzles observed in exclusive $B$ meson decays, concentrating on the large difference between the direct CP asymmetries in the $B^0\to {\pi }^{\mp }{K}^{\pm }$ and $B^{\pm }\to {\pi }^0{K}^{\pm }$ modes, the large $B^0\to {\pi }^0{\pi }^0$ branching ratio, and the large deviation of the mixing-induced CP asymmetries in the $b\to sq\bar{q}$ penguins from those in the $b\to c\bar{c}s$ trees.

Comments: 6 pages, 1 figure, talk presented at the 9th Workshop on High Energy Physics Phenomenology, Bhubaneswar, Orissa, India, Jan. 3-14, 2006; reference added