Dark matter from <i>CP</i> symmetry of order 4: evolution in the asymmetric regime

Иванов, И. П.; Laletin, Maxim

doi:10.1088/1475-7516/2019/05/032

Cited by 5 publications

(3 citation statements)

References 54 publications

(124 reference statements)

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“…protect the scalar dark matter candidates against decay [51] and may be used to generate radiative neutrino masses [52]. Multi-Higgs-doublet models based on even higher order CP symmetries were constructed in [53].…”

Section: Jhep04(2023)116mentioning

confidence: 99%

Limiting FCNC induced by a CP symmetry of order 4

Zhao

Иванов

Pasechnik

et al. 2023

J. High Energ. Phys.

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CP4 3HDM is a three-Higgs-doublet model based on the CP symmetry of order 4 (CP4). Imposing CP4 leads to remarkable connections between the scalar and Yukawa sectors and unavoidably generates tree-level flavor-changing neutral couplings (FCNC). It remains unclear whether FCNC can be sufficiently suppressed in the CP4 3HDM. In this paper, we systematically explore this issue. We first develop an efficient scanning procedure which takes the quark masses and mixing as input and expresses the FCNC matrices in terms of physical quark observables and quark rotation parameters. This procedure allows us to explore the FCNC effects for all the Yukawa sectors possible within the CP4 3HDM. We find that, out of the eight possible CP4 Yukawa sectors, only two scenarios are compatible with the K, B, Bs and, in particular, D-meson oscillation constraints. The results of this work serve as clear guidelines for future phenomenological scans of the model.

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Section: Jhep04(2023)116mentioning

confidence: 99%

Limiting FCNC induced by a CP symmetry of order 4

Zhao

Иванов

Pasechnik

et al. 2023

J. High Energ. Phys.

Self Cite

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show abstract

“…Many examples of different symmetries have been studied where CP can be violated in the scalar sector, in the context of 3HDM, including A 4 and S 4 [30][31][32], ∆ (27) [33][34][35][36][37][38], exotic CP4 [39][40][41][42]. Unlike in the case of 2HDM (Inert Doublet Models [43][44][45]), it is possible to have both CP violation (in the active or inert sector) and a possible dark matter (DM) candidate in the context of 3HDM [46][47][48][49][50][51][52][53].…”

Section: Introductionmentioning

confidence: 99%

Complex $S_3$-symmetric 3HDM

Kunčinas¹,

M.²,

Osland³

et al. 2023

Preprint

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CP violation plays a very important role in nature with implications both for Particle Physics and for Cosmology. Accounting for the observed matter anti-matter asymmetry of the Universe requires the existence of new sources of CP violation beyond the Standard Model. In models with an extended scalar sector CP violation can emerge either explicitly, i.e., at the Lagrangian level, or spontaneously. Spontaneous CP violation occurs in the framework of the electroweak symmetry breaking whenever the Lagrangian conserves CP and the vacuum breaks it. This requires that not all vacuum expectation values be real. In the context of multi-Higgs extensions of the Standard Model imposing the existence of a scalar basis where all couplings are real is a sufficient condition for CP to be explicitly conserved. We discuss a three-Higgs-doublet model with an underlying S 3 symmetry, allowing in principle for complex couplings. In this framework it is possible to have either spontaneous or explicit CP violation in the scalar sector, depending on the regions of parameter space corresponding to the different possible vacua of the S 3 symmetric potential. We list all possible vacuum structures allowing for CP violation in the scalar sector specifying whether it can be explicit or spontaneous. It is by now established that CP is violated in the flavour sector and that the Cabibbo-Kobayashi-Maskawa matrix is complex. In order to understand what are the possible sources of CP violation in the Yukawa sector we analyse the implications of the different available choices of representations for the quarks under the S 3 group. This classification is based strictly on the exact S 3 -symmetric scalar potential with no soft symmetry breaking terms. The scalar sector of one such model was explored numerically. After applying the theoretical and the most important experimental constraints the available parameter space is shown to be able to give rise to light neutral scalars at the O(MeV) scale.

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“…Many examples of different symmetries have been studied where CP can be violated in the scalar sector, in the context of 3HDM, including A 4 and S 4 [30][31][32], ∆ (27) [33][34][35][36][37][38], exotic CP4 [39][40][41][42]. Unlike in the case of the 2HDM JHEP07(2023)013 (Inert Doublet Models [43][44][45]), it is possible to have both CP violation (in the active or inert sector) and a possible dark matter (DM) candidate in the context of 3HDM [46][47][48][49][50][51][52][53].…”

Section: Jhep07(2023)013 1 Introductionmentioning

confidence: 99%

Complex S3-symmetric 3HDM

Kunčinas

Osland

et al. 2023

J. High Energ. Phys.

View full text Add to dashboard Cite

CP violation plays a very important role in nature with implications both for Particle Physics and for Cosmology. Accounting for the observed matter-antimatter asymmetry of the Universe requires the existence of new sources of CP violation beyond the Standard Model. In models with an extended scalar sector CP violation can emerge either explicitly, i.e., at the Lagrangian level, or spontaneously. Spontaneous CP violation occurs in the framework of the electroweak symmetry breaking whenever the Lagrangian conserves CP and the vacuum breaks it. This requires that not all vacuum expectation values be real. In the context of multi-Higgs extensions of the Standard Model imposing the existence of a scalar basis where all couplings are real is a sufficient condition for CP to be explicitly conserved. We discuss a three-Higgs-doublet model with an underlying S3 symmetry, allowing in principle for complex couplings. In this framework it is possible to have either spontaneous or explicit CP violation in the scalar sector, depending on the regions of parameter space corresponding to the different possible vacua of the S3 symmetric potential. We list all possible vacuum structures allowing for CP violation in the scalar sector specifying whether it can be explicit or spontaneous. It is by now established that CP is violated in the flavour sector and that the Cabibbo-Kobayashi-Maskawa matrix is complex. In order to understand what are the possible sources of CP violation in the Yukawa sector we analyse the implications of the different available choices of representations for the quarks under the S3 group. This classification is based strictly on the exact S3-symmetric scalar potential with no soft symmetry breaking terms. The scalar sector of one such model was explored numerically. After applying the theoretical and the most important experimental constraints the available parameter space is shown to be able to give rise to light neutral scalars at the $$ \mathcal{O} $$ O (MeV) scale.

show abstract

Dark matter from CP symmetry of order 4: evolution in the asymmetric regime

Cited by 5 publications

References 54 publications

Limiting FCNC induced by a CP symmetry of order 4

Limiting FCNC induced by a CP symmetry of order 4

Complex $S_3$-symmetric 3HDM

Complex S3-symmetric 3HDM

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