Dorsch, G C, Huber, S J, Mimasu, K and No, J M (2014) Echoes of the electroweak phase transition: discovering a second Higgs doublet through A0 → ZH0. Physical Review Letters (PRL), 113 (21). p. 211802. ISSN 0031-9007
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Abstract
The 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.
Item Type: | Article |
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Schools and Departments: | School of Mathematical and Physical Sciences > Physics and Astronomy |
Subjects: | Q Science > QC Physics > QC0770 Nuclear and particle physics. Atomic energy. Radioactivity > QC0793 Elementary particle physics |
Depositing User: | Catrina Hey |
Date Deposited: | 06 Jan 2015 10:59 |
Last Modified: | 06 Mar 2017 17:07 |
URI: | http://srodev.sussex.ac.uk/id/eprint/51896 |
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📧 Request an updateProject Name | Sussex Project Number | Funder | Funder Ref |
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Particle Physics Theory at Royal Holloway and Sussex | G0742 | STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL | ST/J000477/1 |