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Measurements of the Branching Fractions of the Singly-Cabibbo-Suppressed Decays D⁰toωη, η^((prime))π⁰ and η^((prime))η
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arxiv 1801.05988 v2 pith:BZJBJBPR submitted 2018-01-18 hep-ex
Measurements of the Branching Fractions of the Singly-Cabibbo-Suppressed Decays D⁰toωη, η^((prime))π⁰ and η^((prime))η
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By analyzing a data sample of 2.93 fb$^{-1}$ collected at $\sqrt s=$ 3.773 GeV with the BESIII detector operated at the BEPCII storage rings, we measure the branching fractions ${\mathcal B}(D^0\to\omega\eta)=(2.15\pm0.17_{\rm stat.}\pm0.15_{\rm sys.})\times 10^{-3}$, ${\mathcal B}(D^0\to\eta\pi^0)=(0.58\pm0.05_{\rm stat.}\pm0.05_{\rm sys.})\times 10^{-3}$, ${\mathcal B}(D^0\to\eta^\prime\pi^0)=(0.93\pm0.11_{\rm stat.}\pm0.09_{\rm sys.})\times 10^{-3}$, ${\mathcal B}(D^0\to\eta\eta)=(2.20\pm0.07_{\rm stat.}\pm0.06_{\rm sys.})\times 10^{-3}$ and ${\mathcal B}(D^0\to\eta^\prime\eta)=(0.94\pm0.25_{\rm stat.}\pm0.11_{\rm sys.})\times 10^{-3}$. We note that ${\mathcal B}(D^0\to \omega\eta)$ is measured for the first time and that ${\mathcal B}(D^0\to \eta\eta)$ is measured with much improved precision.
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