Orateur
Steven Paasch
(DESY)
Description
Using a CMS measurement of four top (𝑡𝑡¯𝑡𝑡¯) 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.
