2 00 1 BELLE - CONF - 0107 Observation of Color - Suppressed B 0 → D ( ∗ ) 0 X 0 Decays
نویسندگان
چکیده
We report the first observation of color-suppressed B0 → D0π0 and D(∗)0ω decays and evidence of B0 → D∗0π0 and D(∗)0η. The branching fractions are found to be B(B0 → D0π0) = (2.9 +0.4 −0.3 ± 0.6) × 10−4, B(B0 → D0ω) = (1.7 +0.5 +0.3 −0.4 −0.4)×10, and B(B0 → D∗0ω) = (3.4 +1.3 −1.1±0.8)×10. The analysis is based on a data sample of 21.3 fb−1 collected at the Υ(4S) resonance by the Belle detector at the KEKB e+e− collider.
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تاریخ انتشار 2001