Search for SM H->mumu with 79.8fb-1 Data at 13 TeV with the ATLAS Detector

The detection of the SM H->mumu decay is important to study the Higgs boson Yukawa couplings to the 2nd generation fermions. Discovering the signal of Higgs boson decay to dimuon has been extremely challenging due to the small decay branching fraction (2.2x10-4) and very large irreducible background from Drell-Yan production at the LHC. The search for SM H→μμ has been a high profile analysis in Higgs physics study program. This poster presents the latest search method and results at the time of the conference. Using the combined data sets from LHC Run 1 to Run 2, we present the limit on signal strength of SM H->mumu