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As the 125 GeV Higgs becomes disfavored as a portal to the dark sector, oneis motivated to look beyond the SM-Higgs sector, into extended scalar-mediatedportal mechanisms. In this work we consider one interesting possibility of suchextended scalar sector, namely Type X two Higgs doublet with a scalar singletdark matter. This model with the advantage of light pseudoscalars also providesthe explanation for the observed anomalous magnetic moment of muon. The darkmatter phenomenology of this model is unique from the other types of two Higgsdoublet models. Therefore, it is quite intriguing to look for signaturesspecific to this model at the collider experiments. In this work we take up thetask of finding suitable final states and regions of parameters space that canbe probed at the high-luminosity runs of LHC. We go beyond our rectangularcut-based approach and use Artificial Neural Network which shows remarkableimprovement in terms of signal significance.

Collider Signatures of Type-X 2HDM + scalar singlet dark matter at HL-LHC