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Natural quark mixing and inverse seesaw in a left-right model with an axion
High Energy Physics - Phenomenology · Submitted 21 Feb 2019
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We show how the spontaneous breaking of the Peccei-Quinn symmetry by a scalar singlet can provide us with solutions not only to the strong CP and dark matter problems but can also help to generate naturally suppressed off-diagonal CKM elements and small neutrino masses via the inverse seesaw mechanism.
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The abstract, sentence by sentence
We consider a minimal left-right model with a Peccei-Quinn symmetry, where generalised charge conjugation plays the role of the left-right symmetry. We show how the spontaneous breaking of the Peccei-Quinn symmetry by a scalar singlet can provide us with solutions not only to the strong CP and dark matter problems but can also help to generate naturally suppressed off-diagonal CKM elements and small neutrino masses via the inverse seesaw mechanism. For this, we make use of an economical scalar sector composed of a bi-doublet, two doublets and a singlet only. As a result of the new gauge bosons and neutrinos, the neutrinoless double beta decay, as well as lepton flavour violating processes, receives new contributions which can, in principle, become relevant due to the low-scale nature of the inverse seesaw mechanism. The model can easily accommodate all the current data on fermion masses and mixing even if the left-right scale is only high enough to evade the current experimental constraints.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We consider a minimal left-right model with a Peccei-Quinn symmetry, where generalised charge conjugation plays the role of the left-right symmetry. | contribution 0.62 | 0.58 | 0.04 | asserted 0.97 |
| s1 | We show how the spontaneous breaking of the Peccei-Quinn symmetry by a scalar singlet can provide us with solutions not only to the strong CP and dark matter problems but can also help to generate naturally suppressed off-diagonal CKM elements and small neutrino masses via the inverse seesaw mechanism. | contribution 0.50 | 0.90 | 0.78 | asserted 0.87 |
| s2 | For this, we make use of an economical scalar sector composed of a bi-doublet, two doublets and a singlet only. | method 0.97 | 0.69 | 0.04 | asserted 0.98 |
| s3 | As a result of the new gauge bosons and neutrinos, the neutrinoless double beta decay, as well as lepton flavour violating processes, receives new contributions which can, in principle, become relevant due to the low-scale nature of the inverse seesaw mechanism. | result 0.55 | 0.53 | 0.08 | hedged possibility 0.93 |
| s4 | The model can easily accommodate all the current data on fermion masses and mixing even if the left-right scale is only high enough to evade the current experimental constraints. | result 0.88 | 0.72 | 0.28 | hedged possibility 0.50 |
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The paper
Original abstract
We consider a minimal left-right model with a Peccei-Quinn symmetry, where generalised charge conjugation plays the role of the left-right symmetry. We show how the spontaneous breaking of the Peccei-Quinn symmetry by a scalar singlet can provide us with solutions not only to the strong CP and dark matter problems but can also help to generate naturally suppressed off-diagonal CKM elements and small neutrino masses via the inverse seesaw mechanism. For this, we make use of an economical scalar sector composed of a bi-doublet, two doublets and a singlet only. As a result of the new gauge bosons and neutrinos, the neutrinoless double beta decay, as well as lepton flavour violating processes, receives new contributions which can, in principle, become relevant due to the low-scale nature of the inverse seesaw mechanism. The model can easily accommodate all the current data on fermion masses and mixing even if the left-right scale is only high enough to evade the current experimental constraints.
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How the literature uses it
1 arXiv paper cite this in 1 sentence
What it cites · 26 sentences without a confident label
Uses the method or tool of 1 paper
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The branching ratio for these processes can be written as [ref] BR(l_i →l_j γ) = 3 α_em/2 π(|(G_L^γ)_ij|^2+|(G_R^γ)_ij|^2) , where $G_L^γ$ and $G_R^γ$ are explicitly given in the Appendix [ref].
Lepton number and flavour violation in TeV-scale left-right symmetric theories with large left-right mixing · Lepton flavour violation and heavy neutrino constraints · 0.86
Uses data or values from 2 papers
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Among the possible decays, the constraint on the muon decay is the strongest one with $BR(μ^+→e^+ γ) < 4.2×10^-13$ [ref] .
Search for the Lepton Flavour Violating Decay $\mu^{+} \to e^+ \gamma$ with the Full Dataset of the MEG Experiment · Lepton flavour violation and heavy neutrino constraints · 0.99
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Whereas the current upper limits for the branching ratio associated with tau decays, i.e. $τ→μγ$ and $τ→e γ$, are of order of $10^-8$ [ref] .
Searches for Lepton Flavor Violation in the Decays tau -> e gamma and tau -> mu gamma · Lepton flavour violation and heavy neutrino constraints · 1.00
Compares with 2 papers
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[ref] , where the type-I seesaw mechanism is realised and the authors argue that only for values of $v_R≥50$ TeV can the current neutrino data be fitted.
Natural Alignment of Quark Flavors and Radiatively Induced Quark Mixings · Lepton masses: inverse seesaw mechanism · 0.99
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[ref] , the authors avoid such an issue by assuming an asymmetric LR model in which $η_L$ is absent, in ref.
Asymmetric Higgs Sector and Neutrino Mass in an SU(2)_R Model · The scalar sector · 0.92
Cites as background 4 papers
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For discussions on this topic, see, for example, Refs. [ref] .
Higgs Decays in the Low Scale Type I See-Saw Model · Lepton flavour violation and heavy neutrino constraints · 0.89
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For discussions on this topic, see, for example, Refs. [ref] .
Constraining Sterile Neutrinos from Precision Higgs Data · Lepton flavour violation and heavy neutrino constraints · 0.89
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For discussions on this topic, see, for example, Refs. [ref] .
Bounds on TeV Seesaw Models from LHC Higgs Data · Lepton flavour violation and heavy neutrino constraints · 0.89
Discussion
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