Measurement of absolute branching fractions of $D_s^{+}$ hadronic decays

Abstract

Using $e^{+}{e}^{-}$ collision data collected at the BESIII detector at center-of-mass energies between 4.128 and 4.226 GeV, corresponding to an integrated luminosity of $7.33{\mathrm{fb}}^{-1}$, we determine the absolute branching fractions of fifteen hadronic $D_s^{+}$ decays with a double-tag technique. In particular, we make precise measurements of the branching fractions $\mathcal{B}(D_s^{+}\to K^{+}{K}^{-}{\pi }^{+})=(5.49\pm 0.04\pm 0.07)\%$, $\mathcal{B}(D_s^{+}\to K_S^0{K}^{+})=(1.50\pm 0.01\pm 0.01)\%$ and $\mathcal{B}(D_s^{+}\to K^{+}{K}^{-}{\pi }^{+}{\pi }^0)=(5.50\pm 0.05\pm 0.11)\%$, where the first uncertainties are statistical and the second ones are systematic. The \emph{CP} asymmetries in these decays are also measured and all are found to be compatible with zero.