Erlangen 2026 – scientific programme

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T: Fachverband Teilchenphysik

T 4: Higgs Physics I

T 4.1: Talk

Monday, March 16, 2026, 16:15–16:30, KH 00.016

Search for non-resonant Higgs boson pair production in dilepton final states of the bbWW decay mode at CMS — •Lara Markus, Matteo Bonanomi, Mathis Frahm, Johannes Haller, Balduin Letzer, and Matthias Schröder — Institut für Experimentalphysik, Universität Hamburg

The trilinear coupling of the Higgs boson is related to the shape of the Higgs potential, which makes it a crucial parameter of the Standard Model. The trilinear coupling can be directly probed by measuring the cross section of Higgs boson pair production in proton-proton collisions at the LHC.
A search for non-resonant Higgs boson pair production is presented, targeting final states where one Higgs boson decays to a pair of bottom quarks and the other Higgs boson decays to two W bosons, with subsequent decays of the W bosons into leptons and neutrinos. The analysis is performed on data collected at a center-of-mass energy of 13.6 TeV by the CMS detector in 2022 and 2023, with a corresponding integrated luminosity of 62.4 fb⁻¹. Events are selected based on the b-tagged jets multiplicity, and state-of-the-art neural network classifiers are used to enhance the sensitivity to the rare signal topology. Upper limits are set on the Higgs boson pair production cross section and as a function of the trilinear coupling strength.

Keywords: Di-Higgs; bbWW decay; Higgs boson pairs