Amplitude analysis and branching fraction measurement of $D_s^{+}\to K^{-}{K}^{+}{\pi }^{+}{\pi }^0$

Abstract

The first amplitude analysis of the decay $D_s^{+}\to K^{-}{K}^{+}{\pi }^{+}{\pi }^0$ is presented using the data samples, corresponding to an integrated luminosity of 6.32 fb${}^{-1}$, collected with the BESIII detector at $e^{+}{e}^{-}$ center-of-mass energies between 4.178 and 4.226 GeV. More than 3000 events selected with a purity of 97.5\% are used to perform the amplitude analysis, and nine components are found necessary to describe the data. Relative fractions and phases of the intermediate decays are determined. With the detection efficiency estimated by the results of the amplitude analysis, the branching fraction of $D_s^{+}\to K^{-}{K}^{+}{\pi }^{+}{\pi }^0$ decay is measured to be $(5.42\pm 0.10_{stat.}\pm 0.17_{syst.})\%$.

arXiv comment20 pages, 24 figures

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Cited by in corpus (4)

• Measurement of the absolute branching fraction of the inclusive decay $D_s^{+}\to {\pi }^{+}{\pi }^{+}{\pi }^{-}X$
• First Measurement of the Decay Dynamics in the Semileptonic Transition of the $D^{+(0)}$ into the Axial-vector Meson ${\bar{K}}_1(1270)$
• Charged pions asymmetry from the decay of light neutral axial mesons due to interference
• Measurement of the branching fractions for Cabibbo-suppressed decays $D^{+}\to K^{+}{K}^{-}{\pi }^{+}{\pi }^0$ and $D_{(s)}^{+}\to K^{+}{\pi }^{-}{\pi }^{+}{\pi }^0$ at Belle