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In “Electroweak Scalar Effects Beyond Dimension-6 in SMEFT” we explore the impact of heavy scalar fields on the Standard Model Effective Field Theory (SMEFT) by computing effective dimension-eight operators. Focusing on the Two Higgs Doublet Model and the Complex Triplet Scalar Model, we ‘integrate out’ heavy scalar fields at one-loop order in the so-called Green’s…
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In our recent paper “Impact of New Physics on Momentum-Dependent Particle Widths and Propagators” we investigate how momentum-dependent widths and propagators influence gauge and Higgs bosons, along with the top quark, within the Standard Model (SM) and its SMEFT (Standard Model Effective Field Theory) extensions. We analyse these effects using perturbative resummation techniques. A notable finding is…
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