Detectable Gravitational Waves from Very Strong Phase Transitions in the General NMSSM

Understand

We study the general NMSSM with an emphasis on the parameter regions with a very strong first-order electroweak phase transition (EWPT).

• In the presence of heavy fields coupled to the Higgs sector, the analysis can be problematic due to the existence of sizable radiative corrections.
• In this paper we propose a subtraction scheme that helps to circumvent this problem.
• For simplicity we focus on a parameter region that is by construction hidden from the current collider searches.