Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2006-07-18
Phys.Rev.D74:092002,2006
Physics
High Energy Physics
High Energy Physics - Experiment
11 pages, 5 figures, KEK Preprint 2006-17, Belle Preprint 2006-20, minor changes : this version accepted for publication in Ph
Scientific paper
10.1103/PhysRevD.74.092002
We present improved measurements of the branching fractions of the color-suppressed decays $\bar{B}^0 \to D^{(*)0} h^{0}$ where $h^{0}$ represents a light neutral meson $\pi^{0}$, $\eta$ or $\omega$. The measurements are based on a data sample of 140 $fb^{-1}$, collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB energy-asymmetric $e^+e^-$ collider, corresponding to seven times the luminosity of the previous Belle measurements. All the measured branching fractions fall in the range 1.4-2.4 $\times 10^{-4}$, which is significantly higher than theoretical predictions based on naive factorization.
Blyth S.
for the Belle Collaboration
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