Amplitude Analysis of the $D^{+}\to K_S^0{\pi }^{+}{\pi }^0$ Dalitz Plot

Abstract

We perform an analysis of the $D^{+}\to K_S^0{\pi }^{+}{\pi }^0$ Dalitz plot using a data set of 2.92 fb${}^{-1}$ of $e^{+}{e}^{-}$ collisions at the $\psi (3770)$ mass 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 ($K_S^0{\rho }^{+}$, $K_S^0\rho (1450{)}^{+}$, ${\overline{K}}^{\ast 0}{\pi }^{+}$, ${\overline{K}}_0(1430{)}^0{\pi }^{+}$, $\overline{K}(1680{)}^0{\pi }^{+}$, ${\overline{\kappa }}^0{\pi }^{+}$) plus a small non-resonant component. Using the fit fractions from this analysis, partial branching ratios are updated with higher precision than previous measurements.

24 pages, 7 figures, submitted to Phys. Rev. D; Author names added, typos added, old PACS numbers (PACS2003) hidded

Cited by in corpus (12)

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• $a_1(1260),a_1(1420)$ and the production in heavy meson decays
• Study of the decay $D^{+}\to K^{\ast }(892{)}^{+}{K}_S^0$ in $D^{+}\to K^{+}{K}_S^0{\pi }^0$
• Study of CP Violation in $D^{\pm }\to K^{\ast }(892{)}^0{\pi }^{\pm }+{\bar{K}}^{\ast }(892{)}^0{\pi }^{\pm }\to K_{S,L}^0{\pi }^0{\pi }^{\pm }$ Decays
• Precise $K^{\ast }(892)\to K\pi$ branching fractions