"Hunting for Dark Matter with Boosted Higgs Bosons in ATLAS"

Although dark matter (DM) contributes a large component of the mass-energy of the universe, its properties 
and interactions with known particles remain unknown. In light of this unsolved puzzle, searches for DM pair-produced 
t Large Hadron Collider (LHC) provide important information complementary to direct and indirect searches in order to 
determine whether a signal observed experimentally indeed stems from DM. In this presentation, I will report the latest 
search results of DM pair production in association with a Higgs boson using the LHC Run2 data (sqrt(s)=13 TeV) collected 
by the ATLAS detector. I'll demonstrate the improvement of the analysis using the state-of-the-art boosted Higgs boson techniques. 
Because the observed data are found to be consistent with the expected Standard Model backgrounds, I'll show results interpreted 
using Z'-2HDM simplified models with the most stringent limits. Finally, I will discuss the prospects of this search in the coming 
LHC Run2 and new ideas of the boosted Higgs tagging.