A New Approach to Electroweak Symmetry Non-Restoration

Abstract

Electroweak symmetry non-restoration up to high temperatures well above the electroweak scale offers new alternatives for baryogenesis. We propose a new approach for electroweak symmetry non-restoration via an inert Higgs sector that couples to the Standard Model Higgs as well as an extended scalar singlet sector. We implement renormalization group improvements and thermal resummation, necessary to evaluate the effective potential spanning over a broad range of energy scales and temperatures. We present examples of benchmark scenarios that allow for electroweak symmetry non-restoration all the way up to hundreds of TeV temperatures, and also feature suppressed sphaleron washout factors down to the electroweak scale. Our method for transmitting the Standard Model broken electroweak symmetry to an inert Higgs sector has several intriguing implications for (electroweak) baryogenesis, early universe thermal histories, and can be scrutinized through Higgs physics phenomenology and electroweak precision measurements at the HL-LHC.

32 pages, 6 figures, 4 tables; v2: matches published version

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• Array Programming with NumPy
• Gravitational-wave sensitivity curves
• The global electroweak fit at NNLO and prospects for the LHC and ILC
• Inert Doublet Model and LEP II Limits
• Theoretical uncertainties for cosmological first-order phase transitions
• The Baryogenesis Window in the MSSM
• Consistent Use of the Standard Model Effective Potential
• Consistent Use of Effective Potentials
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• The trap in the early Universe: impact on the interplay between gravitational waves and LHC physics in the 2HDM
• The flair of Higgsflare: Distinguishing electroweak EFTs with $W_L{W}_L\to n\times h$
• Self Consistent Thermal Resummation: A Case Study of the Phase Transition in 2HDM
• Electroweak Asymmetric Early Universe via a Scalar Condensate
• Electroweak Symmetry Non-Restoration from Dark Matter
• Towards TeV-Scale Supersymmetric Electroweak Baryogenesis
• Probing Higgs exotic decay at the LHC with machine learning
• Type-II Majoron Dark Matter
• High Reheating Temperature without Axion Domain Walls
• Entangled states as a probe of early universe history: a Higgs case study
• Early Universe hypercharge breaking and neutrino mass generation