Stabilization of moduli in spacetime with nested warping and the UED

Arun, Mathew Thomas; Choudhury, Debajyoti

doi:10.1016/j.nuclphysb.2017.08.004

Cited by 18 publications

(25 citation statements)

References 42 publications

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“…Any fluctuation about this stabilized value leads to a scalar degree of freedom, called the radion field. There have been numerous studies later on, regarding the details of the stabilization mechanism, corresponding collider signatures and of course, various generalizations, e.g., time dependent stabilization of the radion field (for a small sample of works see [14][15][16][17][18][19][20][21][22][23], and also the references therein).…”

Section: Introductionmentioning

confidence: 99%

Gravity stabilizes itself

Chakraborty

SenGupta

2017

Eur. Phys. J. C

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We show that a possible resolution to the stabilization of an extra spatial dimension (radion) can be obtained solely in the context of gravitational dynamics itself without the necessity of introducing any external stabilizing field. In this scenario the stabilized value of the radion field gets determined in terms of the parameters appearing in the higher curvature gravitational action. Furthermore, the mass of the radion field and its coupling to the standard model fields are found to be in the weak scale implying possible signatures in the TeV scale colliders. Some resulting implications are also discussed.

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Section: Introductionmentioning

confidence: 99%

Gravity stabilizes itself

Chakraborty

SenGupta

2017

Eur. Phys. J. C

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“…(5) and (6), this limit translates to a lower bound on Λ φ of a few TeVs. However, this bound can be relaxed considerably for models with more than one extra dimension [44][45][46]. In these classes of models, the mass of the graviton and its coupling to the SM fields are suppressed due to the presence of two scales in the theory, and Λ φ as low as 1 TeV is allowed.…”

Section: Theoretical and Experimental Constraintsmentioning

confidence: 99%

Discussing 125 GeV and 95 GeV excess in light radion model

Sachdeva

Sadhukhan

2020

Phys. Rev. D

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Even if the LHC observations are consistent with the Standard model (SM), current LHC results are not precise enough to rule out the presence of new physics. Taking a contrarian view of the SM Higgs fandom, we look out for a more suitable candidate for the 125 GeV boson observed at the LHC. At the same time, a recent result from CMS hints toward an excess near 95 GeV in the diphoton (γγ) channel. Given these aspects, we revisit the Higgs-radion mixing model to explore the viability of the radion mixed Higgs to be the 125 GeV boson along with the presence of a light radion (to be precise, Higgs mixed radion) that can show up in future experiments in the γγ channel. We find that the mixed radion-Higgs scenario gives a better fit than the SM, with the radion mixed Higgs as a more suitable 125 GeV scalar candidate. It also gives rise to a diphoton excess from the light radion, consistent with the LHC observations.

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“…Thus, smarter generalizations are called for. Embedding the UED in a 6-dimensional warped space [26,27], for example, makes it possible to evade the relic density bounds by exploiting the s-channel annihilation channel with graviton mediated by a KK-graviton exchange. In this paper we offer a different solution, one that leads to a very rich collider phenomenology.…”

Section: Jhep01(2019)230mentioning

confidence: 99%

Living orthogonally: quasi-universal extra dimensions

Arun

Choudhury

Sachdeva

2019

J. High Energ. Phys.

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The minimal Universal Extra Dimension scenario is highly constrained owing to opposing constraints from the observed relic density on the one hand, and the nonobservation of new states at the LHC on the other. Simple extensions in five-dimensions can only postpone the inevitable. Here, we propose a six-dimensional alternative with the key feature being that the SM quarks and leptons are localized on orthogonal directions whereas gauge bosons traverse the entire bulk. Several different realizations of electroweak symmetry breaking are possible, while maintaining agreement with low energy observables. This model is not only consistent with all the current constraints opposing the minimal Universal Extra Dimension scenario but also allows for a multi-TeV dark matter particle without the need for any fine-tuning. In addition, it promises a plethora of new signatures at the LHC and other future experiments.

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Stabilization of moduli in spacetime with nested warping and the UED

Cited by 18 publications

References 42 publications

Gravity stabilizes itself

Gravity stabilizes itself

Discussing 125 GeV and 95 GeV excess in light radion model

Living orthogonally: quasi-universal extra dimensions

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