OKC BSM meeting

Thursday 9 Nov 2023, 10:00 → 11:00 Europe/Stockholm

A5:1003 (AlbaNova Main Building)

Christian Ohm (KTH Royal Institute of Technology), Timothy Linden (Stockholm University)

Those who are at AlbaNova are very welcome to join in the room, but there is also a zoom connection: Zoom link 
(room 104 167 778, password 737501)

1 First-order phase transitions in Twin Higgs models

Twin Higgs (TH) is the simplest model that incorporates a mirror matter sector. It naturally achieves a stable electroweak scale and matches the 125 GeV Standard Model (SM) Higgs mass without introducing coloured partners in LHC reach.
In the context of TH, the SM-like Higgs boson emerges as a pseudo-Nambu-Goldstone boson of the approximate global symmetry group. In my presentation, I will discuss the scalar phase transition in the Twin Higgs model and demonstrate that, under specific conditions, it can be strongly first-order. This transition may lead to the emission of a stochastic gravitational wave background and provide a framework for explaining the observed baryon asymmetry in the universe.

Speaker: Ignacy Nałęcz (Warzaw)