Göttingen 2025 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 3: Higgs Physics II (BSM Higgs)
T 3.1: Vortrag
Montag, 31. März 2025, 16:45–17:00, ZHG105
Search for light pseudoscalar Higgs bosons in the four-kaon final state with the CMS detector — Nils Faltermann1, •Johannes Hornung1, Markus Klute1, and Benedikt Maier2 — 1Karlsruhe Institute of Technologie, Karlsruhe, Germany — 2Imperial College, London, United Kingdom
Since the discovery of the Higgs boson, extensive measurements of its properties have set upper limits on the branching ratio of its yet undetected decay modes. The branching ratio encompasses immediate decays into SM particles that are not detectable, as well as decays into BSM particles. This talk focuses on a search for Higgs boson decays into pairs of hypothetical pseudoscalar Higgs bosons a, as predicted in models like the NMSSM. Specifically, the search strategy, current status, and expected limits of an analysis targeting prompt decays H -> aa -> KKKK using data collected by the CMS detector during Run 2 of the LHC will be discussed.
Keywords: BSM; additional Higgs bosons; Pseudoscalars; Kaons; CMS