Abstract

High energy proton collisions at the Large Hadron Collider (LHC) allow probing signatures of yet unobserved dark matter particle production, complementing the direct and indirect dark matter detection experiments. Dark matter particles can be detected by the ATLAS detector via their recoil if produced in association with particles visible to the detector such as quarks, gluons, photons, vector bosons or Higgs bosons. The sensitivity to potential dark matter signals at the LHC can be substantially enhanced by considering the hadronic boson decays in challenging event topologies with highly boosted decay products. This requires the development of modern reconstruction techniques based on calorimeter and precision tracking detector information. I will discuss recent LHC searches using Run-2 proton-proton collision data recorded with the ATLAS detector, placing a particular focus on signatures with hadronic final states.