Search for Y(4260) $\rightarrow KK J/\psi$ at BESIII
ORAL
Abstract
Many of the newly-discovered ``XYZ'' states offer unique insights into physics near the charmonium region, including the Y(4260) state, which is being studied with BESIII detector at the BEPCII collider in Beijing. $2813 \nolinebreak pb^{-1}$ of data has been collected at center of mass energy points ranging from 4.190 \nolinebreak MeV to 4.420 \nolinebreak MeV. In this analysis, we study the processes of $e^{+}e^{-} \rightarrow K^{+}K^{-} J/\psi$ and $K_{s}^{0} K_{s}^{0} J/\psi$ within this region, as well as compare these lineshapes to $e^{+}e^{-} \rightarrow \pi^{+} \pi^{-} J/\psi$. With these results, we can gain new information on the Y(4260) state and its possible non-$q\overline{q}$ interpretations.
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Authors
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Daniel Bennett
Indiana University