Article (Scientific journals)
Multi-Higgs models with CP-symmetries of increasingly high order
Laletin, Maxim; Ivanov, Igor
2018In Physical Review. D, 98
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Keywords :
Higgs; CP; Dark matter
Abstract :
[en] When building CP-symmetric models beyond the Standard Model, one can impose CP-symmetry of higher order. This means that one needs to apply the CP-transformation more than two times to get the identity transformation, but still the model is perfectly CP-conserving. A multi-Higgs-doublet model based on CP-symmetry of order 4, dubbed CP4, was recently proposed and its phenomenology is being explored. Here, we show that the construction does not stop at CP4. We build examples of renormalizable multi-Higgs-doublet potentials which are symmetric under CP8 or CP16, without leading to any accidental symmetry. If the vacuum conserves CP-symmetry of order 2k, then the neutral scalars become CP-eigenstates, which are characterized not by CP-parities but by CP-charges defined modulo 2k. One or more lightest states can be the dark matter candidates, which are protected against decay not by the internal symmetry but by the exotic CP. We briefly discuss their mass spectra and interaction patterns for CP8 and CP16.
Research center :
STAR - Space sciences, Technologies and Astrophysics Research - ULiège
Disciplines :
Physics
Author, co-author :
Laletin, Maxim ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Inter. fondamentales en physique et astrophysique (IFPA)
Ivanov, Igor ;  Instituto Superior Tecnico > Departamento de Fisica > CFTP
Language :
English
Title :
Multi-Higgs models with CP-symmetries of increasingly high order
Publication date :
16 July 2018
Journal title :
Physical Review. D
ISSN :
2470-0010
eISSN :
2470-0029
Publisher :
American Physical Society, College Park, United States - Maryland
Volume :
98
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 16 April 2018

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