中国物理学会高能物理分会第十三届全国粒子物理学术会议（2021）

A search for non-resonant and resonant Higgs boson pair production in bbττ final states is presented, using a pp collision data set with an integrated luminosity of 139 fb−1 collected at s=√13 TeV by the ATLAS experiment at the LHC. Events with at least one τ-lepton decays hadronically are considered, and multivariate analysis techniques are used to extract the signals. The talk will show an overview of the physics motivation, the analysis methodology as well as the preliminary results.