CONSTRAINTS ON DARK HIGGS MODELS THROUGH REINTERPRETATION OF AN ATLAS DARK MATTER SEARCH PRESERVED IN RECAST

We present the reinterpretation of a search for dark matter produced in association with a Higgs boson decaying to b-quarks performed with RECAST, a framework designed to facilitate the reinterpretation of existing searches for new physics. RECAST is enabled through the sustainable preservation of the original data analysis as re-executable declarative workflows using modern cloud technologies and integrated with the wider CERN Analysis Preservation efforts. The reinterpretation targets a model predicting dark matter production in association with a hypothetical dark Higgs boson decaying into b-quarks where the mass of the dark Higgs boson $m_s$ is a free parameter, setting the need for a faithful reinterpretation of the analysis. The dataset has an integrated luminosity of 79.8 ${fb}^{−1}$ and was recorded with the ATLAS detector at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}$ = 13 TeV. Constraints on the parameter space of the dark Higgs model for a fixed choice of dark matter mass $m_{\chi}$ = 200 GeV exclude model configurations with a mediator mass up to 3.2 TeV.