Observation of Color-Suppressed $\overline{B}^0 \to D^{(*)0}X^0$ Decays

Details Observation of Color-Suppressed $\overline{B}^0 \to D^{(*)0}X^0$ Decays Observation of Color-Suppressed $\overline{B}^0 \to D^{(*)0}X^0$ Decays

2001-07-20

arxiv.org/abs/hep-ex/0107048v1

Physics

High Energy Physics

High Energy Physics - Experiment

paper submitted to the 2001 Lepton Photon Conference

Scientific paper

We report the first observation of color-suppressed $\overline{B}^0\to D^0 \pi^0$ and $D^{(*)0} \omega$ decays and evidence of $\overline{B}^0 \to D^{*0} \pi^0$ and $D^{(*)0} \eta$. The branching fractions are found to be ${\cal B} (\overline{B}^0\to D^0 \pi^0) = (2.9 ^{+0.4}_{-0.3} \pm 0.6) \times 10^{-4}$, ${\cal B} (\overline{B}^0 \to D^0 \omega) = (1.7 ^{+0.5 +0.3}_{-0.4 -0.4}) \times 10^{-4}$, and ${\cal B} (\overline{B}^0 \to D^{*0} \omega) = (3.4 ^{+1.3}_{-1.1}\pm 0.8) \times 10^{-4}$. The analysis is based on a data sample of 21.3 fb$^{-1}$ collected at the $\Upsilon(4S)$ resonance by the Belle detector at the KEKB $e^{+} e^{-}$ collider.

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