QCD parity violation at LHC in warped extra dimension

Haba, Naoyuki; Kaneta, Kunio; Tsuno, S.

doi:10.1103/physrevd.87.095002

Cited by 3 publications

(1 citation statement)

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“…There have already been many investigations into the physics of KK gluons at the LHC, in case of flat compact spaces [19,20] and in case of warped extra dimensions [21,22,23]. Systematic general studies of the massive color-octet vector boson productions have already been given in [24,25].…”

Section: Introductionmentioning

confidence: 99%

Constraints on gauge-Higgs unification models at the LHC

Kitazawa

Sakai

2016

Mod. Phys. Lett. A

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We examine the possibility of observing the Kaluza-Klein gluons in gauge-Higgs unification models at the LHC with the energy √ s = 14 TeV. We consider a benchmark model with the gauge symmetry SU(3) C × SU(3) W in five-dimensional space-time, where SU(3) C is the gauge symmetry of the strong interaction and SU(3) W is that for the electroweak interaction and a Higgs doublet field. It is natural in general to introduce SU(3) C gauge symmetry in five-dimensional space-time as well as SU(3) W gauge symmetry in gauge-Higgs unification models. Since the fifth dimension is compactified to S 1 /Z 2 orbifold, there are Kaluza-Klein modes of gluons in low-energy effective theory in four-dimensional space-time. We investigate the resonance contribution of the first Kaluza-Klein gluon to dijet invariant mass distribution at the LHC, and provide signal-to-noise ratios in various cases of Kaluza-Klein gluon masses and kinematical cuts. Although the results are given in a specific benchmark model, we discuss their application to general gauge-Higgs unification models with Kaluza-Klein gluons. Gauge-Higgs unification models can be verified or constrained through the physics of the strong interaction, though they are proposed to solve the naturalness problem in electroweak symmetry breaking.

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Section: Introductionmentioning

confidence: 99%

Constraints on gauge-Higgs unification models at the LHC

Kitazawa

Sakai

2016

Mod. Phys. Lett. A

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Dark matter in the SO(5) x U(1) gauge-Higgs unification

Funatsu

Hatanaka

Hosotani

et al. 2014

Progress of Theoretical and Experimental Physics

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In the SO(5)×U (1) gauge-Higgs unification the lightest, neutral component of n F SO(5)-spinor fermions (dark fermions), which are relevant for having the observed unstable Higgs boson, becomes the dark matter of the universe. We show that the relic abundance of the dark matter determined by WMAP and Planck data is reproduced, below the bound placed by the direct detection experiment by LUX, by a model with one light and three heavier (n F = 4) dark fermions with the lightest one of a mass from 2.3 TeV to 3.1 TeV. The corresponding Aharonov-Bohm phase θ H in the fifth dimension ranges from 0.097 to 0.074. The case of n F = 3 (n F = 5, 6) dark fermions yields the relic abundance smaller (larger) than the observed limit.

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