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000631131 005__ 20250624212154.0
000631131 037__ $$aPUBDB-2025-01922
000631131 041__ $$aEnglish
000631131 1001_ $$0P:(DE-H253)PIP1102306$$aVerduras Schaeidt, Alain$$b0$$eCorresponding author
000631131 1112_ $$aSeminar$$cSapporo$$d2025-06-20 - 2025-06-20$$wJapan
000631131 245__ $$aPrecision physics as a tool to investigate BSM Higgs models: from colliders to GW$$f2025-06-20 - 
000631131 260__ $$c2025
000631131 3367_ $$033$$2EndNote$$aConference Paper
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000631131 3367_ $$0PUB:(DE-HGF)31$$2PUB:(DE-HGF)$$aTalk (non-conference)$$btalk$$mtalk$$s1750765817_4172704
000631131 3367_ $$2DINI$$aOther
000631131 502__ $$cUniversity of Hokkaido
000631131 520__ $$aUnderstanding the shape of the Higgs potential and the nature of electroweak symmetry breaking is a central goal of particle physics. Extensions of the Standard Model (SM) Higgs sector can lead to rich phenomenology, including modified Higgs self-couplings, new scalar states, and strong first-order phase transitions in the early Universe—potentially sourcing a stochastic gravitational wave background. Precision calculations, in particular loop corrections to Higgs self-interactions, play a key role in testing the viability of these BSM scenarios and connecting collider observables with cosmological signals.In this talk we will focus on two case studies: the real-singlet extension of the SM without a Z2\mathbb{Z}_2 symmetry (RxSM), and the Two-Higgs-Doublet Model (THDM). In the RxSM, we identify regions compatible with a strong first-order electroweak phase transition, compute the resulting gravitational wave signal for LISA, and assess the impact of one-loop corrections on di-Higgs production at the (HL-)LHC. In parallel, we investigate the leading two-loop corrections to trilinear Higgs couplings in the THDM and related models, emphasizing their relevance for precision tests and perturbative stability. Throughout, we highlight the complementarity between collider and gravitational wave signatures as tools to constrain BSM Higgs scenarios.
000631131 536__ $$0G:(DE-HGF)POF4-611$$a611 - Fundamental Particles and Forces (POF4-611)$$cPOF4-611$$fPOF IV$$x0
000631131 536__ $$0G:(GEPRIS)520070247$$aDFG project G:(GEPRIS)520070247 - Untersuchungen von Neue Physik mit generischen Präzisionsberechnungen (520070247)$$c520070247$$x1
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000631131 9101_ $$0I:(DE-588b)2008985-5$$6P:(DE-H253)PIP1102306$$aDeutsches Elektronen-Synchrotron$$b0$$kDESY
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000631131 9141_ $$y2025
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