Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 95: Searches for Dark Matter III

T 95.4: Talk

Thursday, March 18, 2021, 16:45–17:00, Tt

Sensitivity of LHC Measurements to Two Higgs Doublet Models with a Pseudoscalar Mediator — •Martin Habedank¹ and Priscilla Pani² — ¹Institut für Physik, Humboldt-Universität zu Berlin — ²Deutsches Elektronen-Synchrotron (DESY)

In the past few years, two Higgs doublet models with a pseudoscalar mediator that couples to Dark Matter have gained increased attention as they offer a fairly minimal route to address the problem of Dark Matter and at the same avoid constraints from direct detection experiments. While they have been repeatedly probed in the LHC search programme, the sensitivity of existing LHC precision measurements to those models is not as well-explored. A study striving to fill that gap has been conducted, employing the Contur toolkit (https://hepcedar.gitlab.io/contur-webpage/) to compare the new physics predictions to LHC measurements. This method offers the additional advantage of allowing to deviate from the commonly addressed benchmark scenarios by broadening the considered parameter ranges. In this talk, the results of that study will be summarised, pointing out the differences to LHC search combinations and lessons to be learned.