Measurement of branching fractions and $CP$ asymmetries for $D_s^{+}\to K^{+}(\eta ,{\pi }^0)$ and $D_s^{+}\to {\pi }^{+}(\eta ,{\pi }^0)$ decays at Belle

Abstract

We report measurements of the branching fractions and $CP$ asymmetries for $D_s^{+}\to K^{+}\eta$, $D_s^{+}\to K^{+}{\pi }^0$, and $D_s^{+}\to {\pi }^{+}\eta$ decays, and the branching fraction for $D_s^{+}\to {\pi }^{+}{\pi }^0$. Our results are based on a data sample corresponding to an integrated luminosity of 921 fb${}^{-1}$ collected by the Belle detector at the KEKB $e^{+}{e}^{-}$ asymmetric-energy collider. Our measurements of $CP$ asymmetries in these decays are the most precise to-date; no evidence for $CP$ violation is found.

arXiv comment11 pages, 4 figures

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