The universal extra dimensional model with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:msup><mml:mi>S</mml:mi><mml:mn>2</mml:mn></mml:msup><mml:mo stretchy="false">/</mml:mo><mml:msub><mml:mi>Z</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math> extra-space

Maru, Nobuhito; Nomura, Takaaki; Sato, Joe; Yamanaka, Masato

doi:10.1016/j.nuclphysb.2009.11.023

Cited by 31 publications

(66 citation statements)

References 41 publications

(39 reference statements)

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“…This contrasts with the case of positive curvature, as for spherical orbifolds, where breaking of gauge invariance or background fields are needed, see for example [11][12][13].…”

Section: Jhep06(2016)169mentioning

confidence: 99%

“…This is the natural next step in order to allow the whole SM to propagate in the bulk of the nilmanifold instead of being localised. Indeed, while this paper focuses on a setup with a bulk scalar field whose excitations contain a dark matter candidate, it would be interesting to investigate JHEP06(2016)169 the case in which all SM fields are bulk fields and the dark matter candidate is an excitation of a neutral SM field, as realized in other types of extra-dimensional models [11,12,[46][47][48]. Furthermore, a more complete study of the orbifolds is necessary to identify a space that can accommodate both a Dark Matter candidate and chiral fermion zero modes.…”

Section: Jhep06(2016)169mentioning

confidence: 99%

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Towards Kaluza-Klein Dark Matter on nilmanifolds

Andriot

Cacciapaglia

Deandrea

et al. 2016

J. High Energ. Phys.

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We present a first study of the field spectrum on a class of negatively-curved compact spaces: nilmanifolds or twisted tori. This is a case where analytical results can be obtained, allowing to check numerical methods. We focus on the Kaluza-Klein expansion of a scalar field. The results are then applied to a toy model where a natural Dark Matter candidate arises as a stable massive state of the bulk scalar.

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“…This contrasts with the case of positive curvature, as for spherical orbifolds, where breaking of gauge invariance or background fields are needed, see for example [11][12][13].…”

Section: Jhep06(2016)169mentioning

confidence: 99%

Section: Jhep06(2016)169mentioning

confidence: 99%

Towards Kaluza-Klein Dark Matter on nilmanifolds

Andriot

Cacciapaglia

Deandrea

et al. 2016

J. High Energ. Phys.

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show abstract

“…for realizations. Models with spherical orbifolds have also been studied[79,80]. [4] R. Barbieri and A. Strumia, "What is the limit on the Higgs mass?," Phys.…”

mentioning

confidence: 99%

Current LHC constraints on minimal universal extra dimensions

2017

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In this letter, we present LHC limits on the minimal universal extra dimension (MUED) model from LHC Run 1 data and current limits from searches of the ongoing Run 2. Typical collider signals of the Kaluza-Klein (KK) states mimic generic degenerate supersymmetry (SUSY) missing transverse momentum signatures since the KK particles cascade decay into jets, leptons and the lightest KK particle which is stable due to KK parity and evades detection. We test the parameter space against a large number of supersymmetry based missing energy searches implemented in the public code CheckMATE. We demonstrate the complementarity of employing various searches which target a large number of final state signatures, and we derive the most up to date limits on the MUED parameter space from 13 TeV SUSY searches. Universal Extra Dimensions -Introduction and Review.-Models with universal extra dimensions (UED) [1] represent a simple extension of the Standard Model which include a dark matter candidate and are testable at the LHC.[2] The extra-dimensions are universal in the sense that all Standard Model (SM)fields are promoted to fields which propagate on the full space-time M × X, where M is the flat four dimensional (4D) Minkowski space and X is a compact space. As X is compact, the momenta along the extradimensions are discretized. In the 4D effective theory, each extra-dimensional field yields a 4D field without extra-dimensional momentum (the zero-mode which is to be identified with the 4D SM field) as well as a Kaluza-Klein (KK) tower of excitations which are heavy partner states with the same quantum numbers as the zero-mode. The KK mass spectrum is determined by the inverse size and the geometry of the extra-dimensions. In the simplest case of only one extra dimension, -which we focus on in this letter -compactification on the orbifold X = S 1 /Z 2 allows to have chiral zero-modes of fermions and A µ zero-mode for gauge fields without an additionalThe 5D UED model appears to be a very simple and predictive model as it seems to have only one parameter beyond the Standard Model (BSM), the compactification radius R. However, as a 5D theory, the model is inherently non-renormalizable and can only be considered as an effective theory, valid below a cutoff scale Λ, which introduces an additional parameter into the model. Naive dimensional analysis [4-7] and bounds from unitarity violation in gluon KK mode scattering [8] suggest that the cutoff is rather low: ΛR O(10 − 50). As a consequence, higher-dimensional operators at the cutoff scale can be phenomenologically relevant. [9] In the 5D minimal UED (MUED) model [10], all higher-dimensional operators are assumed to be absent at the cutoff scale Λ, and they are only induced at lower energies due to renormalization group running, thus keeping the model a simple BSM scenario with only two parameters: the inverse compactification radius R −1 which sets the mass scale of the first KK excitations, i.e. of the lightest partners of the SM fields, and ΛR, which controls the number of KK m...

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“…In particular, different models with two extra-dimensions have been proposed, such as T 2 /Z 2 [8], the chiral square T 2 /Z 4 [12,13], [15], the flat real projective plane R P 2 [16], and the real projective plane starting from the sphere [17]. For example, in [16], the parity assuring the stability of the dark matter candidate is due to a remnant of the six-dimensional Lorentz symmetry after compactification, as the model has no fixed points (see [18] for a detailed discussion).…”

Section: Introductionmentioning

confidence: 99%

Higgs quartic coupling and neutrino sector evolution in 2UED models

et al. 2014

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Two compact universal extra-dimensional models are an interesting class of models for different theoretical and phenomenological issues, such as the justification of having three standard model fermion families, suppression of proton decay rate, dark matter parity from relics of the six-dimensional Lorentz symmetry, origin of masses and mixings in the standard model. However, these theories are merely effective ones, with typically a reduced range of validity in their energy scale. We explore two limiting cases of the three standard model generations all propagating in the bulk or all localised to a brane, from the point of view of renormalisation group equation evolutions for the Higgs sector and for the neutrino sector of these models. The recent experimental results of the Higgs boson from the LHC allow, in some scenarios, stronger constraints on the cutoff scale to be placed, from the requirement of the stability of the Higgs potential.

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The universal extra dimensional model with S2/Z2 extra-space

Cited by 31 publications

References 41 publications

Towards Kaluza-Klein Dark Matter on nilmanifolds

Towards Kaluza-Klein Dark Matter on nilmanifolds

Current LHC constraints on minimal universal extra dimensions

Higgs quartic coupling and neutrino sector evolution in 2UED models

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