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Phenomenological analysis of D-brane Pati-Salam vacua
High Energy Physics - Theory · Submitted 15 Feb 2010
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We argue that this problem could be solved in particular D-brane setups where these fields arise in different intersections.
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The abstract, sentence by sentence
In the present work we perform a phenomenological analysis of the effective low energy models with Pati-Salam (PS) gauge symmetry derived in the context of D-branes. A main issue in these models arises from the fact that the right-handed fermions and the PS-symmetry breaking Higgs field transform identically under the PS symmetry, causing unnatural matter-Higgs mixing effects. We argue that this problem could be solved in particular D-brane setups where these fields arise in different intersections. We further observe that whenever a large Higgs mass term is generated in a particular class of mass spectra, a splitting mechanism -reminiscent of the doublet triplet splitting- may protect the neutral Higgs components from a heavy mass term. We analyze the implications of each individual representation which in principle is available in these models in order to specify the minimal spectrum required to build up a consistent PS model which reconciles the low energy data. A short discussion is devoted on the effects of stringy instanton corrections, particularly those generating missing Yukawa couplings and contributing to the fermion mass textures. We discuss the correlations of the intersecting D-brane spectra with those obtained from Gepner constructions and analyze the superpotential, the resulting mass textures and the low energy implications of some examples of the latter along the lines proposed above.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | In the present work we perform a phenomenological analysis of the effective low energy models with Pati-Salam (PS) gauge symmetry derived in the context of D-branes. | contribution 1.00 | 0.95 | 0.04 | asserted 0.97 |
| s1 | A main issue in these models arises from the fact that the right-handed fermions and the PS-symmetry breaking Higgs field transform identically under the PS symmetry, causing unnatural matter-Higgs mixing effects. | background 0.95 | 0.16 | 0.06 | asserted 1.00 |
| s2 | We argue that this problem could be solved in particular D-brane setups where these fields arise in different intersections. | contribution 0.58 | 0.61 | 0.24 | hedged possibility 1.00 |
| s3 | We further observe that whenever a large Higgs mass term is generated in a particular class of mass spectra, a splitting mechanism -reminiscent of the doublet triplet splitting- may protect the neutral Higgs components from a heavy mass term. | result 0.95 | 0.83 | 0.11 | hedged possibility 1.00 |
| s4 | We analyze the implications of each individual representation which in principle is available in these models in order to specify the minimal spectrum required to build up a consistent PS model which reconciles the low energy data. | contribution 0.86 | 0.93 | 0.10 | asserted 0.96 |
| s5 | A short discussion is devoted on the effects of stringy instanton corrections, particularly those generating missing Yukawa couplings and contributing to the fermion mass textures. | contribution 0.99 | 0.66 | 0.03 | asserted 0.69 |
| s6 | We discuss the correlations of the intersecting D-brane spectra with those obtained from Gepner constructions and analyze the superpotential, the resulting mass textures and the low energy implications of some examples of the latter along the lines proposed above. | contribution 0.98 | 0.88 | 0.10 | asserted 0.85 |
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The paper
Original abstract
In the present work we perform a phenomenological analysis of the effective low energy models with Pati-Salam (PS) gauge symmetry derived in the context of D-branes. A main issue in these models arises from the fact that the right-handed fermions and the PS-symmetry breaking Higgs field transform identically under the PS symmetry, causing unnatural matter-Higgs mixing effects. We argue that this problem could be solved in particular D-brane setups where these fields arise in different intersections. We further observe that whenever a large Higgs mass term is generated in a particular class of mass spectra, a splitting mechanism -reminiscent of the doublet triplet splitting- may protect the neutral Higgs components from a heavy mass term. We analyze the implications of each individual representation which in principle is available in these models in order to specify the minimal spectrum required to build up a consistent PS model which reconciles the low energy data. A short discussion is devoted on the effects of stringy instanton corrections, particularly those generating missing Yukawa couplings and contributing to the fermion mass textures. We discuss the correlations of the intersecting D-brane spectra with those obtained from Gepner constructions and analyze the superpotential, the resulting mass textures and the low energy implications of some examples of the latter along the lines proposed above.
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How the literature uses it
15 arXiv papers cite this in 24 sentences
Papers citing it · 13 sentences without a confident label
Cites it as support 1 paper
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This is also feasible within the D-brane ( see Appendix B.2 of Ref. [ref] ) and very likely within F-theory constructions (see remarks in Ref. [ref] .
Advantages of Unity With SU(4)-Color: Reflections Through Neutrino Oscillations, Baryogenesis and Proton Decay · SUSY SO(10) Versus a String-Unified G(2,2,4) Symmetry in 4D · 0.99
Cites it as background 8 papers
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In [ref] the case $U(4)×U_R(2)×U_L(2)$ was analysed in some detail.
Neutron Majorana mass from Exotic Instantons in a Pati-Salam model · Introduction · 0.85
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For a more detailed description, we refer the reader to [ref] (for an analogous analysis see [ref] )[For analogous work see [ref] .
SU(5) D-brane realizations, Yukawa couplings and proton stability · String consistency conditions and phenomenological constraints · 0.97
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Subsequently, intersecting D-brane models based on SM-like, Pati-Salam [ref] , and SU(5) [ref] gauge groups were constructed within the same framework and systematically studied in Refs. [ref] [see [ref] and [ref] for heterotic constructions of Pati-Salam models.].
All Fermion Masses and Mixings in an Intersecting D-brane World · Introduction · 0.86
What it cites · 29 sentences without a confident label
Uses the method or tool of 1 paper
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Instead, therefore, of seeking solutions for individual Yukawa couplings, it is adequate to investigate the viability conditions for a structure with hierarchy |ξ⃗_1| ≪ |ξ⃗_2| ∼ |ξ⃗_3| ·To simplify the analysis, we can bring the matrix $m_ξ⃗$ into a lower triangular (Cholesky) form $m_C$ and work out cases with real entries [ref] .
D-brane Inspired Fermion Mass Textures · A variation of model 2 · 0.98
Compares with 3 papers
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We note that this is in contrast to some cases [ref] - [ref] which arise in the context of SM gauge symmetry where the up and down quark mass matrices have a `complementary' texture-zero structure making it hard to reconcile the CKM mixing [ref] .
Instanton induced charged fermion and neutrino masses in a minimal Standard Model scenario from intersecting D-branes · Perturbative superpotential · 0.97
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We note that this is in contrast to some cases [ref] - [ref] which arise in the context of SM gauge symmetry where the up and down quark mass matrices have a `complementary' texture-zero structure making it hard to reconcile the CKM mixing [ref] .
D-brane Inspired Fermion Mass Textures · Perturbative superpotential · 0.97
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We note that this is in contrast to some cases [ref] - [ref] which arise in the context of SM gauge symmetry where the up and down quark mass matrices have a `complementary' texture-zero structure making it hard to reconcile the CKM mixing [ref] .
D-branes at Toric Singularities: Model Building, Yukawa Couplings and Flavour Physics · Perturbative superpotential · 0.97
Cites as support 3 papers
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We should remark however, that when both terms are present, potentially dangerous dimension five proton decay operators are generated as it was also observed in [ref] .
Branes and instantons intersecting at angles · Instanton induced masses · 0.97
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We should remark however, that when both terms are present, potentially dangerous dimension five proton decay operators are generated as it was also observed in [ref] .
On mass hierarchies in orientifold vacua · Instanton induced masses · 0.97
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We should remark however, that when both terms are present, potentially dangerous dimension five proton decay operators are generated as it was also observed in [ref] .
SU(5) orientifolds, Yukawa couplings, Stringy Instantons and Proton Decay · Instanton induced masses · 0.97
Cites as background 7 papers
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In the context of orientifolds constructed from Gepner models there has been an extensive search for all possible embeddings of the SM gauge theory in D-brane configurations [ref] [For some initial studies of these constructions see [ref] . ].
On mass hierarchies in orientifold vacua · Pati Salam models at Gepner points · 0.95
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In the context of orientifolds constructed from Gepner models there has been an extensive search for all possible embeddings of the SM gauge theory in D-brane configurations [ref] [For some initial studies of these constructions see [ref] . ].
Orientifolds, hypercharge embeddings and the Standard Model · Pati Salam models at Gepner points · 0.95
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Extended objects of the non-perturbative sector of string theory, the so-called D-branes [ref] , appears to be a promising framework for model building.
Open strings and their symmetry groups · Introduction · 1.00
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