TY - GEN T1 - Constraints on spin-0 dark matter mediators and invisible Higgs decays using ATLAS 13 TeV $pp$ collision data with two top quarks and missing transverse momentum in the final state UR - http://dx.doi.org/10.1140/epjc/s10052-023-11477-z PY - 2022/11/10 AU - Collaboration ATLAS ED - Y2 - 2025/07/02 ER -