Abstract
We have measured the branching fractions for B → D®X, B → D®X, and B → D®Xℓ+v. From these results and some previously measured branching fractions, we obtain B(b → cc®s) = (21.9 ± 3.7)%, B(b → sg) < 6.8% at 90% C.L., and B(D0 → K− π+ = (3.69 ± 0.20)%. Implications for the “B semileptonic decay problem” (measured branching fraction being below theoretical expectations) are discussed. With the increase in the value of B(b → cc®s) due to B → DX, the discrepancy is no longer statistically compelling.
Original language | English (US) |
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Pages (from-to) | 1150-1155 |
Number of pages | 6 |
Journal | Physical review letters |
Volume | 80 |
Issue number | 6 |
DOIs | |
State | Published - 1998 |