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Precision Electroweak Data and Unification of Couplings in Warped Extra Dimensions
High Energy Physics - Phenomenology · Submitted 16 May 2003
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim In this article, we study in detail the effect of gauge and fermion fields propagating in the bulk in the presence of gauge brane kinetic terms compatible with gauge coupling unification, and we present ways of obtaining a consistent description of experimental data, while allowing values of the first Kaluza Klein mode masses of the order of a few TeV.
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The abstract, sentence by sentence
Warped extra dimensions allow a novel way of solving the hierarchy problem, with all fundamental mass parameters of the theory naturally of the order of the Planck scale. The observable value of the Higgs vacuum expectation value is red-shifted, due to the localization of the Higgs field in the extra dimension. It has been recently observed that, when the gauge fields propagate in the bulk, unification of the gauge couplings may be achieved. Moreover, the propagation of fermions in the bulk allows for a simple solution to potentially dangerous proton decay problems. However, bulk gauge fields and fermions pose a phenomenological challenge, since they tend to induce large corrections to the precision electroweak observables. In this article, we study in detail the effect of gauge and fermion fields propagating in the bulk in the presence of gauge brane kinetic terms compatible with gauge coupling unification, and we present ways of obtaining a consistent description of experimental data, while allowing values of the first Kaluza Klein mode masses of the order of a few TeV.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | Warped extra dimensions allow a novel way of solving the hierarchy problem, with all fundamental mass parameters of the theory naturally of the order of the Planck scale. | background 1.00 | 0.06 | 0.03 | asserted 0.89 |
| s1 | The observable value of the Higgs vacuum expectation value is red-shifted, due to the localization of the Higgs field in the extra dimension. | background 1.00 | 0.08 | 0.02 | asserted 1.00 |
| s2 | It has been recently observed that, when the gauge fields propagate in the bulk, unification of the gauge couplings may be achieved. | background 0.99 | 0.05 | 0.04 | hedged possibility 0.99 |
| s3 | Moreover, the propagation of fermions in the bulk allows for a simple solution to potentially dangerous proton decay problems. | background 0.98 | 0.08 | 0.03 | asserted 0.82 |
| s4 | However, bulk gauge fields and fermions pose a phenomenological challenge, since they tend to induce large corrections to the precision electroweak observables. | background 0.89 | 0.08 | 0.04 | asserted 0.80 |
| s5 | In this article, we study in detail the effect of gauge and fermion fields propagating in the bulk in the presence of gauge brane kinetic terms compatible with gauge coupling unification, and we present ways of obtaining a consistent description of experimental data, while allowing values of the first Kaluza Klein mode masses of the order of a few TeV. | contribution 1.00 | 0.94 | 0.74 | asserted 0.91 |
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The paper
Original abstract
Warped extra dimensions allow a novel way of solving the hierarchy problem, with all fundamental mass parameters of the theory naturally of the order of the Planck scale. The observable value of the Higgs vacuum expectation value is red-shifted, due to the localization of the Higgs field in the extra dimension. It has been recently observed that, when the gauge fields propagate in the bulk, unification of the gauge couplings may be achieved. Moreover, the propagation of fermions in the bulk allows for a simple solution to potentially dangerous proton decay problems. However, bulk gauge fields and fermions pose a phenomenological challenge, since they tend to induce large corrections to the precision electroweak observables. In this article, we study in detail the effect of gauge and fermion fields propagating in the bulk in the presence of gauge brane kinetic terms compatible with gauge coupling unification, and we present ways of obtaining a consistent description of experimental data, while allowing values of the first Kaluza Klein mode masses of the order of a few TeV.
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References
How the literature uses it
22 arXiv papers cite this in 25 sentences
Papers citing it · 17 sentences without a confident label
Compares with it 1 paper
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In this way, we obtain [equation] In the brane-Higgs limit $β→∞$, these results agree with the corresponding expressions derived in the literature [ref] up to very small $O(1/L)$ terms, which depend on how precisely one deals with non-oblique effects in the definition of $S,T,U$.
Higgs Production and Decay in Models of a Warped Extra Dimension with a Bulk Higgs · Electroweak Fit and Determination of 5D Parameters · 1.00
Cites it as background 7 papers
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These effects are potentially important for deriving constraints on the model from precision measurements, such as electroweak precision tests (EWPT) [ref] and flavor observables [ref] .
Dynamical origin of flavor hierarchies in a warped extra dimension · Introduction · 0.80
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Heavy vector bosons are particularly interesting because they appear in many theoretically motivated extensions of the SM [ref] .
SMEFT Matching to $Z^\prime$ Models at Dimension-8 · Introduction · 0.86
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[There are other approaches in dealing with the electroweak precision constraints such as the deformed metric model [ref] or a model using brane kinetic term [ref] , but we will not consider these approaches here.]
A Higgs in the Warped Bulk and LHC signals · Introduction · 0.93
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