Karlsruhe 2024 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 48: BSM Higgs 2 (extended Higgs sectors)

T 48.6: Vortrag

Dienstag, 5. März 2024, 17:15–17:30, Geb. 30.41: HS 3

Resonant di-Higgs production in the RxSM considering one-loop corrections for the triple Higgs couplings: Pure resonant vs. full cross sections — •Alain Verduras Schaeidt — DESY

Within the RxSM (the SM extended by a real singlet) we focus on a parameter region giving rise to a Strong First Order Electroweak Phase Transition (SFOEWPT). For the (HL-)LHC we compute the total di-Higgs production cross section and the differential cross section with respect to the di-Higgs invariant mass in the parameter region of interest. We include for the first time the one-loop corrections to the trilinear Higgs couplings using the public tool anyH3. It is shown that only taking into account the purely resonant diagram in di-Higgs production, gg -> H -> hh, as often done in experimental analyses, is not sufficient to obtain reliable results for the resonant di-Higgs production.

Keywords: BSM; Phenomenology; Higgs; Loop corrections; Triple Higgs coupling