Raffaele Tito D'agnolo: The Weak Scale as a Trigger

Thursday 11 Mar 2021, 15:00 → 16:00 Europe/Zurich

Zoom only (CERN)

I will discuss settings where the Higgs mass squared affects the vacuum
expectation value of local operators and can thus act as a “trigger”
of new cosmological dynamics. This triggering mechanism underlies
several existing solutions to the hierarchy problem that trace the
origin of the weak scale to the early history of the Universe. Thinking
about these solutions more systematically from the point of view of weak
scale triggers allows to understand their common predictions, to find
new solutions and to identify unexpected physics related to naturalness
in a rather model-independent way. As an example I discuss a BSM trigger
in a Two Higgs Doublet Model and show how it can be used to link the
tuning of the Higgs mass to that of the cosmological constant. This weak
scale trigger demands the existence of new Higgs states necessarily
comparable to or lighter than the weak scale, with no wiggle room to
decouple them.

https://cern.zoom.us/j/99113688676