Measurement of absolute branching fractions of ${D}_{s}^{+}$ hadronic decays

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 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 $B\left({D}_{s}^{+}\to {K}^{+}{K}^{-}{\pi }^{+}\right)=\left(5.49±0.04±0.07\right)%$ , $B\left({D}_{s}^{+}\to {K}_{S}^{0}{K}^{+}\right)=\left(1.50±0.01±0.01\right)%$ and $B\left({D}_{s}^{+}\to {K}^{+}{K}^{-}{\pi }^{+}{\pi }^{0}\right)=\left(5.50±0.05±0.11\right)%$ , where the first uncertainties are statistical and the second ones are systematic. The CP asymmetries in these decays are also measured and all are found to be compatible with zero.