Observation of SCS decay $D^{+,0}\to \omega \pi$ and branching fraction measurement of $D^0\to K_S^0{K}^{+}{K}^{-}$

Abstract

Using a data set of 2.92 $f{b}^{-1}$ of $e^{+}{e}^{-}$ collisions at the $\Psi$(3770) mass accumulated with the BESIII experiment we present preliminary results from our study of the singly Cabibbo-suppressed decays $D\to \omega \pi$ and the decay of $D^0\to K_S^0{K}^{+}{K}^{-}$. The decay $D^{+}\to \omega {\pi }^{+}$ is observed for the first time with a significance of 5.4$\sigma$ and we find evidence of 4.1$\sigma$ for the decay $D^0\to \omega {\pi }^0$. As a cross-check the branching fraction $D\to \eta \pi$ is measured and is found to be compatible with the current PDG value. The branching fraction of the decay $D^0\to K_S^0{K}^{+}{K}^{-}$ is measured in an untagged analysis with 11743$\pm$113 signal events and is found to be (4.622$\pm$0.045(stat.)$\pm$0.181(sys.))$\times 10^{-3}$. This is compatible with previous measurements but with significant improved precision.

To be published in the proceedings of CHARM-2015, Detroit, MI, 18-22 May 2015

Cited by in corpus (1)

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