期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 3, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1475-7516/2016/03/036
关键词
cosmological phase transitions; particle physics - cosmology connection; cosmology of theories beyond the SM; supersymmetry and cosmology
资金
- German Science Foundation (DFG) [(SFB) 676]
- Swiss National Science Foundation (SNF) [200020-155935]
- STFC [ST/L000504/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/L000504/1] Funding Source: researchfish
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. The analysis proves that (at least) in the identified parameter region the EWPT can be very strong and striking gravitational wave signals can be produced. The corresponding gravitational stochastic background can potentially be detected at the planned space-based gravitational wave observatory eLISA, depending on the specific experiment design that will be approved.
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