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CP4 miracle : shaping Yukawa sector with CP symmetry of order four

Ferreira, P. M.; Ivanov, Igor P.; Jiménez, Enrique; Pasechnik, Roman LU and Serôdio, Hugo LU (2018) In Journal of High Energy Physics 2018(1).
Abstract

We explore the phenomenology of a unique three-Higgs-doublet model based on the single CP symmetry of order 4 (CP4) without any accidental symmetries. The CP4 symmetry is imposed on the scalar potential and Yukawa interactions, strongly shaping both sectors of the model and leading to a very characteristic phenomenology. The scalar sector is analyzed in detail, and in the Yukawa sector we list all possible CP4-symmetric structures which do not run into immediate conflict with experiment, namely, do not lead to massless or mass-degenerate quarks nor to insufficient mixing or CP -violation in the CKM matrix. We show that the parameter space of the model, although very constrained by CP4, is large enough to comply with the electroweak... (More)

We explore the phenomenology of a unique three-Higgs-doublet model based on the single CP symmetry of order 4 (CP4) without any accidental symmetries. The CP4 symmetry is imposed on the scalar potential and Yukawa interactions, strongly shaping both sectors of the model and leading to a very characteristic phenomenology. The scalar sector is analyzed in detail, and in the Yukawa sector we list all possible CP4-symmetric structures which do not run into immediate conflict with experiment, namely, do not lead to massless or mass-degenerate quarks nor to insufficient mixing or CP -violation in the CKM matrix. We show that the parameter space of the model, although very constrained by CP4, is large enough to comply with the electroweak precision data and the LHC results for the 125 GeV Higgs boson phenomenology, as well as to perfectly reproduce all fermion masses, mixing, and CP violation. Despite the presence of flavor changing neutral currents mediated by heavy Higgs scalars, we find through a parameter space scan many points which accurately reproduce the kaon CP -violating parameter ϵK as well as oscillation parameters in K and B(s) mesons. Thus, CP4 offers a novel minimalistic framework for building models with very few assumptions, sufficient predictive power, and rich phenomenology yet to be explored.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Beyond Standard Model, CP violation, Discrete Symmetries, Higgs Physics
in
Journal of High Energy Physics
volume
2018
issue
1
publisher
Springer
external identifiers
  • scopus:85040837855
ISSN
1126-6708
DOI
10.1007/JHEP01(2018)065
language
English
LU publication?
yes
id
099698bd-e88e-4a0d-9757-339d724d728c
date added to LUP
2018-01-30 15:12:13
date last changed
2018-06-10 05:26:45
@article{099698bd-e88e-4a0d-9757-339d724d728c,
  abstract     = {<p>We explore the phenomenology of a unique three-Higgs-doublet model based on the single CP symmetry of order 4 (CP4) without any accidental symmetries. The CP4 symmetry is imposed on the scalar potential and Yukawa interactions, strongly shaping both sectors of the model and leading to a very characteristic phenomenology. The scalar sector is analyzed in detail, and in the Yukawa sector we list all possible CP4-symmetric structures which do not run into immediate conflict with experiment, namely, do not lead to massless or mass-degenerate quarks nor to insufficient mixing or CP -violation in the CKM matrix. We show that the parameter space of the model, although very constrained by CP4, is large enough to comply with the electroweak precision data and the LHC results for the 125 GeV Higgs boson phenomenology, as well as to perfectly reproduce all fermion masses, mixing, and CP violation. Despite the presence of flavor changing neutral currents mediated by heavy Higgs scalars, we find through a parameter space scan many points which accurately reproduce the kaon CP -violating parameter ϵ<sub>K</sub> as well as oscillation parameters in K and B<sub>(s)</sub> mesons. Thus, CP4 offers a novel minimalistic framework for building models with very few assumptions, sufficient predictive power, and rich phenomenology yet to be explored.</p>},
  articleno    = {65},
  author       = {Ferreira, P. M. and Ivanov, Igor P. and Jiménez, Enrique and Pasechnik, Roman and Serôdio, Hugo},
  issn         = {1126-6708},
  keyword      = {Beyond Standard Model,CP violation,Discrete Symmetries,Higgs Physics},
  language     = {eng},
  month        = {01},
  number       = {1},
  publisher    = {Springer},
  series       = {Journal of High Energy Physics},
  title        = {CP4 miracle : shaping Yukawa sector with CP symmetry of order four},
  url          = {http://dx.doi.org/10.1007/JHEP01(2018)065},
  volume       = {2018},
  year         = {2018},
}