B _ h’K
CLEO observed (1997) B± _ h’K± to have a surprisingly large BR. This is now confirmed, and the Ko mode is also seen.
BR(B± _ h’K±) = (8.0 +1.0 ± 0.7) x 10-5
BR(Bo _ h’Ko) = (8.9 +1.8 ± 0.9) x 10-5
BR(B± _ h’p±) < 1.2 x 10-5
The equality of these BRs and the suppression of h’p disfavors the spectator process:
Intrinsic charm or glue content would
enhance penguin diagrams:
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