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T: Fachverband Teilchenphysik

T 48: BSM Higgs 2 (extended Higgs sectors)

T 48.2: Talk

Tuesday, March 5, 2024, 16:15–16:30, Geb. 30.41: HS 3

Search for X → YH production in bbττ final states at the CMS experiment — •Moritz Molch, Ulrich Husemann, Ralf Schmieder, Nikita Shadskiy, Michael Waßmer, and Roger Wolf — Institute of Experimental Particle Physics (ETP), Karlsruhe Institute of Technology (KIT)

Extensions of the Standard Model (SM), like the Next-to-Minimal Supersymmetric Standard Model (NMSSM) introduces additional Higgs bosons with different masses next to the already known SM Higgs boson H. This talk presents a search for the resonant decay of a heavier scalar particle X into a lighter resonance Y and H at the CMS experiment. The analysis considers final states, in which either the Y or the H decays into a pair of bottom quarks, and the other one into a pair of τ leptons.

The analysis presented in this talk uses data recored with the CMS detector in proton-proton collisions during the LHC Run 2. In addition, topologies, in which the four final state particles are well separated from each other, boosted topologies of the bottom quark pair and the τ lepton pair are considered to improve the sensitivity of the analysis, especially in the high mass regions of X. For signal extraction, a parametric deep neural network is used, which enables the treatment of all signal hypotheses with a single neural network at once.