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Two complementary analysis channels are used, with each channel specifically targeting either low or high values of the higgsino mass. The low (high) mass channel exploits 126 (139) fb$^{-1}$ of $\\sqrt{s}=13$ TeV data collected by the ATLAS detector during Run 2 of the Large Hadron Collider. No significant excess above the Standard Model prediction is found. At 95% confidence level, masses up to 940 GeV are excluded for higgsinos decaying exclusively to Higgs bosons. Exclusion limits as a function of the higgsino decay branching ratio to a Higgs boson are also reported.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.136030.v1/t1","@type":"Dataset","description":"Post-fit SR yields of the high-mass channel. The upper panel shows the observed number of events, as well the post-fit...","name":"Yield table for 250 GeV high-mass regions"},{"@id":"https://doi.org/10.17182/hepdata.136030.v1/t2","@type":"Dataset","description":"Post-fit SR yields of the high-mass channel. 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