PhysRevLett.113.211802.pdf (362.95 kB)
Echoes of the electroweak phase transition: discovering a second Higgs doublet through A0 ? ZH0
journal contribution
posted on 2023-06-08, 17:33 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 obtain the spectrum and properties of the new scalars H0, A0, and H? that signal such a phase transition and show that the observation of the decay A0 ? ZH0 at LHC would be a “smoking gun” signature of these scenarios. We analyze the LHC search prospects for this decay in the llbb¯ and llWþW- final states, arguing that current data may be sensitive to this signature in the former channel as well as there being great potential for a discovery in either channel at the very early stages of the 14 TeV run.
Funding
Particle Physics Theory at Royal Holloway and Sussex; G0742; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/J000477/1
History
Publication status
- Published
File Version
- Published version
Journal
Physical Review Letters (PRL)ISSN
0031-9007Publisher
American Physical SocietyExternal DOI
Issue
21Volume
113Page range
1-5Article number
a211802Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2015-01-06First Open Access (FOA) Date
2015-01-06First Compliant Deposit (FCD) Date
2015-01-06Usage metrics
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