Spontaneous CP violation in the 2HDM: Physical conditions and the alignment limit

For the general two-Higgs-doublet model, we present conditions for having spontaneous CP violation, in terms of physical masses and couplings. These relations involve the charged Higgs mass, its cubic couplings with neutral scalars and quartic coupling, and become particularly simple in the alignmen...

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Bibliographic Details
Published in:Physical review. D 2016-12, Vol.94 (11)
Main Authors: Grzadkowski, B, Ogreid, O M, Osland, P
Format: Article
Language:English
Subjects:
Alignment
Couplings
CP violation
Matter & antimatter
Scalars
Online Access:Get full text
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Summary:For the general two-Higgs-doublet model, we present conditions for having spontaneous CP violation, in terms of physical masses and couplings. These relations involve the charged Higgs mass, its cubic couplings with neutral scalars and quartic coupling, and become particularly simple in the alignment limit. In the simplified model with softly broken Z2 symmetry, some deviation from alignment is required for spontaneous CP violation to be present.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.94.115002