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arXiv · 1311.7195

Dalitz Plot Analysis of the $D^+\rightarrow K^0_S π^+ π^0$ Decay

Chengdong Fu
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Abstract

We perform an analysis of the $D^+\rightarrow K^0_S π^+ π^0$ Dalitz plot using a data set of 2.92 fb$^{-1}$ of $e^+e^-$ collisions at the $ψ(3770)$ accumulated by the BESIII Experiment, in which 166694 candidate events are selected with a background of 15.1%. The Dalitz plot is found to be well-represented by a combination of six quasi-two-body decay channels ($K^0_Sρ^+$, $K^0_Sρ(1450)^+$, $\overline{K}^{*0}π^+$, $\overline{K}_0(1430)^0π^+$, $\overline{K}(1680)^0π^+$, $\overlineκ^0π^+$) plus a small non-resonant component. We also consider a model-independent approach to confirm an obvious phase shift for the $\overlineκπ$ component. Using the fit fractions from this analysis, partial branching ratios are updated with higher precision than previous measurements.

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Chengdong Fu. 2013-11-28. Dalitz Plot Analysis of the $D^+\rightarrow K^0_S π^+ π^0$ Decay. https://arxiv.org/abs/1311.7195

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