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The Higgs vacuum uplifted: revisiting the electroweak phase transition with a second Higgs doublet
journal contribution
posted on 2023-06-09, 11:28 authored by G C Dorsch, Stephan HuberStephan Huber, Ken Mimasu, J M NoThe existence of a second Higgs doublet in Nature could lead to a cosmological first order electroweak phase transition and explain the origin of the matter-antimatter asymmetry in the Universe. We explore the parameter space of such a two-Higgs-doublet-model and show that a first order electroweak phase transition strongly correlates with a significant uplifting of the Higgs vacuum w.r.t. its Standard Model value. We then obtain the spectrum and properties of the new scalars H0, A0 and H± that signal such a phase transition, showing that the decay A0 ? H0Z at the LHC and a sizable deviation in the Higgs self-coupling ?hhh from its SM value are sensitive indicators of a strongly first order electroweak phase transition in the 2HDM.
Funding
Theoretical Particle Physics Consortium Sussex - Royal Holloway; G1449; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/L000504/1
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- Published
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- Published version
Journal
Journal of High Energy PhysicsISSN
1029-8479Publisher
Springer VerlagExternal DOI
Issue
12Volume
2017Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2018-01-09First Open Access (FOA) Date
2018-01-09First Compliant Deposit (FCD) Date
2018-01-09Usage metrics
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