| Abstract: | Using a data sample of $2.93~fb^{-1}$ of $e^+e^-$ collisions collected at
$sqrt{s}=3.773 GeV$ in the BESIII experiment, we perform an analysis of the
decay $D^0
ightarrow K_{S}^{0} K^{+} K^{-}$. The Dalitz plot is analyzed using
$1856pm 45$ flavor-tagged signal decays. We find that the Dalitz plot is well
described by a set of six resonances: $a_0(980)^0$, $a_0(980)^+$, $phi(1020)$,
$a_2(1320)^+$, $a_2(1320)^-$ and $a_0(1450)^-$. Their magnitudes, phases and
fit fractions are determined as well as the coupling of $a_0(980)$ to
$Kar{K}$, $g_{Kar{K}}=3.77pm 0.24 ext{(stat.)}pm0.35 ext{(sys.)} GeV$.
The branching fraction of the decay $D^0
ightarrow K_{S}^{0} K^{+} K^{-}$ is
measured using $11660pm 118$ untagged signal decays to be $(4.51pm
0.05 ext{(stat.)}pm 0.16 ext{(sys.)})10^{-3}$. Both measurements are limited
by their systematic uncertainties. |
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