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Dortmund 2021 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 26: Higgs physics (theory)

T 26.4: Vortrag

Dienstag, 16. März 2021, 16:45–17:00, Ta

Probing standard-model Higgs substructures using tops and weak gauge bosons — •Axel Maas — University of Graz, Graz, Austria

Manifest gauge-invariance requires that observable states in the standard-model are described by composite operators, which involve additional (valence) Higgs contributions beyond perturbation theory. This field-theoretical effects has been supported in various lattice simulations, including for fermions. With current available and future experimental facilities it starts to become possible to probe this. This will be explored in this talk.

It will be shown how such a valence Higgs contribution can show up in production of final states like ttbar(Z) at both future lepton and future and current hadron colliders. Especially at the LHC this has been found to be compatible with run 2 data. The effect is expected to be much more substantial at the FCC-hh. Such a substructure can also affect precision observables, e.g. anomalous couplings, both of the Higgs and of the weak gauge bosons. It is therefore a natural candidate for an investigation at the ILC.

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