Measurement of the Ratio of Branching Fractions
Bd → Ds D+ / Bd → D+
where Ds → φ π, K* K and 3π

This is the WEB page summarizing the blessed result for the measurement of the ratio of branching fractions. The measurement is done on the 355 pb-1 data set and have been blessed in the B Physics Meeting on Thursday Jan 12, 2006. This is an update for our previous measurement done with 243 pb-1. In this analysis we also measure the branching of the modes with exited D-mesons in the final state.

BR(B0 → DsD+ ) / BR(B0 → D+-) = 1.99 ± 0.13 ± 0.11 ± 0.44 (BRφ π)± 0.08(BR)
BR(B0 → Ds* D+ ) / BR(B0 → Ds D+ ) = 0.9 ± 0.2 ± 0.1
BR(B0 → Ds D+*) / BR(B0 → Ds D+ ) = 1.5 ± 0.4 ± 0.1
BR(B0 → Ds* D+* ) / BR(B0 → Ds D+ ) = 2.6 ± 0.5 ± 0.2

Reconstructed Bd → DsD+ where Ds → φ π

There is a complete version of the results: ps.

Below the eps versions of all figures meant for downloads.

Yields:

Fig. 1: Bd → D+ 3 π Mass

Fig. 2: Bd → Ds D+ (φ π) Mass

Fig. 3: Bd → Ds D+ (K* K) Mass

Fig. 4: Bd → Ds D+ (3 π) Mass