Was There an Electroweak Phase Transition?

by Michael Ramsey Musolf

Wednesday 9 Apr 2025, 14:00 → 15:00 Europe/Zurich

Aula Caldirola (Milano Statale)

The possible existence of beyond Standard Model physics at the TeV scale or below has important implications for the thermal history of electroweak symmetry-breaking. A first order phase transition -- not possible in the minimal Standard Model with a 125 GeV Higgs boson -- would provide the preconditions for electroweak baryogenesis and the generation of primordial gravitational radiation. I discuss recent developments in assessing this possibility that rely on the combination of EFT methods and non-perturbative (lattice) computations. I also discuss implications for high energy collider phenomenology and next generation gravitational wave searches.

Zoom: https://cern.zoom.us/j/6092844271?pwd=bFNWbUNRQk1HTlBBSFlSYVZWZm8ydz09