Göttingen 2025 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 2: Higgs Physics I (HH and trilinear coupling)

T 2.8: Vortrag

Montag, 31. März 2025, 18:30–18:45, ZHG104

BSM X → YH searches in bbττ final states with the CMS experiment — •Quanshan Li, Moritz Molch, Nikita Shadskiy, Roger Wolf, and Ulrich Husemann — Institute of Experimental Particle Physics (ETP), Karlsruhe Institute of Technology (KIT)

BSM theory introduces additional Higgs bosons with different masses next to the Standard Model Higgs boson H. This talk presents a search for the decay of a heavy scalar boson X into two lighter scalar bosons Y and H with the data recorded during the LHC Run 2.

To distinguish the signal from backgrounds, a parametric neural network is used, enabling the training and evaluation of one single deep neural network for various X and Y mass hypotheses. Data-driven methods are utilized for background estimation. In addition, a comparison of the background prediction with data is shown in control regions.

Keywords: CMS; BSM Di-higgs