Speaker
Lisa Biermann
(Paul Scherrer Institute)
Description
If a first-order electroweak phase transition is realized by an extended scalar sector, this impacts observables at (future) colliders. In this talk I will discuss multiple SM extensions that allow for strong first-order electroweak phase transitions: Two-Higgs Doublet Model (2HDM), Next-to-Minimal Two-Higgs Doublet Model (N2HDM), and two dimension-six effective field theory extensions of the 2HDM. For these I will illustrate how the strength of the phase transition impacts cross sections of double Higgs production, triple Higgs boson production, or top pair production.
