Hierarchical versus degenerate 2HDM: the LHC run 1 legacy at the onset of run 2

Dorsch, G C, Huber, S J, Mimasu, K and No, J M (2016) Hierarchical versus degenerate 2HDM: the LHC run 1 legacy at the onset of run 2. Physical Review D, 93 (11). p. 5033. ISSN 2470-0010

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Abstract

Current discussions of the allowed two-Higgs-doublet model parameter space after LHC run 1 and the prospects for run 2 are commonly phrased in the context of a quasidegenerate spectrum for the new scalars. Here, we discuss the generic situation of a two-Higgs-doublet model with a nondegenerate spectrum for the new scalars. This is highly motivated from a cosmological perspective since it naturally leads to a strongly first-order electroweak phase transition that could explain the matter-antimatter asymmetry in the Universe. While constraints from measurements of Higgs signal strengths do not change, those from searches of new scalar states get modified dramatically once a nondegenerate spectrum is considered.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Theoretical Particle Physics Research Group
Subjects: Q Science > QC Physics
Depositing User: Richard Chambers
Date Deposited: 17 Jan 2017 12:08
Last Modified: 07 Mar 2017 11:00
URI: http://sro.sussex.ac.uk/id/eprint/66234

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Project NameSussex Project NumberFunderFunder Ref
Theoretical Particle Physics Consortium Sussex - Royal HollowayG1449STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCILST/L000504/1
UnsetUnsetUnsetFP7/2007-2013
EWBGandLHC: Electroweak Baryogenesis in the Era of the LHCG1462EUROPEAN UNIONPIEF-GA-2013-625809