Measurement of the $e^{+}{e}^{-}\to K_S{K}_L$ cross section near the $\phi (1020)$ resonance with the SND detector

The cross section for the $e^{+}{e}^{-}\to K_S{K}_L$ process is measured in the center-of-mass energy range from 1000 MeV to 1100 MeV in the experiment with the SND detector at the VEPP-2000 $e^{+}{e}^{-}$ collider. The measurement is carried out in the $K_S\to 2{\pi }^0$ decay mode. Data with an integrated luminosity of 20 pb${}^{-1}$ recorded in 2018 at 18 energy points are used in the analysis. The systematic uncertainty in the measured cross section at the maximum of the $\phi$ resonance is 0.9%. The mass, width of the $\phi$ meson, and the product of the branching fractions $B(\phi \to K_S{K}_L)B(\phi \to e^{+}{e}^{-})$ are determined from the fit to the cross-section energy dependence.