Speaker
Description
The discovery of the 125 GeV Higgs boson opened a new era in the search for heavy resonances at the LHC. Many BSM scenarios, such as 2HDM, 2HDM+S, TRSM, and NMSSM, predict extended scalar sectors with additional Higgs-like states. These models often produce final states with high-pT Higgs bosons, requiring advanced jet-tagging techniques. This talk presents the latest searches from the CMS Collaboration for a heavy scalar (X) decaying into a SM-like Higgs boson (H) and another scalar, which could be a BSM scalar (Y) or another SM-like Higgs boson. We highlight the critical role of state-of-the-art ML-based jet-taggers in identifying boosted decay topologies, which significantly enhance the sensitivity over traditional methods. A summary of recent results is provided, showcasing the most stringent constraints to date on several extended scalar benchmarks.