Precise measurements of branching fractions for ${D}_{s}^{+}$ meson decays to two pseudoscalar mesons

We measure the branching fractions for seven ${D}_{s}^{+}$ two-body decays to pseudo-scalar mesons, by analyzing data collected at $\sqrt{s}$ = 4.178 ∼ 4.226 GeV with the BESIII detector at the BEPCII collider. The branching fractions are determined to be $\begin{array}{c}B\left({D}_{s}^{+}\to {K}^{+}\eta \text{'}\right)=\left(2.68±0.17±0.17±0.08\right)×{10}^{-3},\\ B\left({D}_{s}^{+}\to \eta \text{'}{\pi }^{+}\right)=\left(37.8±0.4±2.1±1.2\right)×{10}^{-3},\\ B\left({D}_{s}^{+}\to {K}^{+}\eta \right)=\left(1.62±0.10±0.03±0.05\right)×{10}^{-3},\\ B\left({D}_{s}^{+}\to \eta {\pi }^{+}\right)=\left(17.41±0.18±0.27±0.54\right)×{10}^{-3},\\ B\left({D}_{s}^{+}\to {K}^{+}{K}_{S}^{0}\right)=\left(15.02±0.10±0.27±0.47\right)×{10}^{-3},\\ B\left({D}_{s}^{+}\to {K}_{S}^{0}{\pi }^{+}\right)=\left(1.109±0.034±0.023±0.035\right)×{10}^{-3},\\ B\left({D}_{s}^{+}\to {K}^{+}{\pi }^{0}\right)=\left(0.748±0.049±0.018±0.035\right)×{10}^{-3},\end{array}$