Heidelberg 2022 – scientific programme

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T: Fachverband Teilchenphysik

T 85: Beyond the Standard Model (Theory) 2 and QFT and Lattice Gauge Theory 1

T 85.1: Talk

Thursday, March 24, 2022, 16:15–16:30, T-H16

Four-top final states as a probe of Two-Higgs-Doublet models — •Steven Paasch and Henning Bahl — Deutsches Elektronen-Synchrotron DESY

Using a CMS measurement of four top (tttt) production in proton-proton collisions we constrain the parameter space of BSM scalar models. We study these effects for models with a generic scalar X with couplings to W-bosons and to top-quarks. We use Monte-Carlo simulators and fast detector simulations to recast the CMS analysis in order to obtain upper limits on the cross section times branching fraction for the production modes pp → (tt,tW,t) + X with X → tt, where X is a new heavy Higgs H, a pseudoscalar A or mixed CP-state. Furthermore we study the impact on Two-Higgs-Doublet models where four top production places constraints on the low tanβ region which is of special interest for Baryogenesis.