Boundary Localized Terms in Universal Extra-Dimensional Models through a Dark Matter perspective

Abstract

In universal extra dimension (UED) models with one compactified extra dimension, a Z_2 symmetry, termed KK-parity, ensures the stability of the lightest Kaluza-Klein particle (LKP). This symmetry leads to two fixed points. In non-minimal versions of UED boundary-localised terms (BLT) for different fields are included at these fixed points and KK-parity may be violated. However, BLTs with same strength at both points induce a new Z_2 symmetry which restores the stability of the LKP. We show that the BLTs serve to relax the bounds set on the compactification scale in UED by the dark matter relic density requirement. At the same time, the precision of the dark matter measurements severely correlates the BLT parameters of gauge bosons and fermions. Depending on the parameter values, the LKP can be chosen to be the level-1 photon, which is essentially the B^(1), or the level-1 Z-boson, basically the W_3^(1). We find that in the latter case the relic density is too small for a W_3^(1) with a \sim 1 TeV mass. We also explore the prospects of direct detection of an LKP which matches the observed dark matter relic density.

23 pages including Appendix, 6 figures, Minor typographical improvements,Publish version

References in corpus (16)

• Observation of an anomalous positron abundance in the cosmic radiation
• Dark Matter Results from 225 Live Days of XENON100 Data
• Combined results of searches for the standard model Higgs boson in pp collisions at sqrt(s) = 7 TeV
• Precision electroweak constraints on Universal Extra Dimensions revisited
• Non-minimal universal extra dimensions
• Kaluza-Klein Dark Matter: Direct Detection vis-a-vis LHC
• Universal extra dimensions after Higgs discovery
• Higgsless fermion masses and unitarity
• Vacuum Stability Constraints and LHC Searches for a Model with a Universal Extra Dimension
• Search for the minimal universal extra dimension model at the LHC with $\sqrt{s}$=7 TeV
• Constraining minimal and non-minimal UED models with Higgs couplings
• Production of Higgs boson excitations of universal extra dimension at the Large Hadron Collider
• Universal Extra Dimensions, Radiative Returns and the Inverse Problem at a Linear e+e- Collider
• The Excited Scalars of the Universal Extra Dimension Model
• Universal extra dimension: Violation of Kaluza-Klein parity
• Constraint on Universal Extra Dimensions from scalar boson searches

Cited by in corpus (21)

• LHC limits on KK-parity non-conservation in the strong sector of universal extra-dimension models
• Constraining minimal and non-minimal UED models with Higgs couplings
• Rare Top Decays in Minimal and Non-minimal Universal Extra Dimension
• Non-Abelian Vector Boson Dark Matter, its Unified Route and signatures at the LHC
• $\mathcal{R}(D^{(\ast )})$ anomalies in light of Non-Minimal Universal Extra Dimension
• $t\to cg$ and $t\to cZ$ in Universal Extra Dimensional Models
• A Review on Non-Minimal Universal Extra Dimensions
• KK-parity non-conservation in UED confronts LHC data
• Status of Flavour Maximal Non-minimal Universal Extra Dimension
• Non-minimal UED confronts $B_s\to {\mu }^{+}{\mu }^{-}$
• Effects of non-minimal Universal Extra Dimension on $B\to X_s\gamma$
• A note on gauge-fixing in the electroweak sector of nmUED
• Looking for $B\to X_s{\ell }^{+}{\ell }^{-}$ in non-minimal Universal Extra Dimensional model
• Exploring non minimal Universal Extra Dimensional Model at the LHC
• Unitarity Constraints on non-minimal Universal Extra Dimensional Model
• Minimal and non-minimal Universal Extra Dimension models in the light of LHC data at 13 TeV
• Notes on sphere-based universal extra dimensions
• The impact of nonminimal Universal Extra Dimensional model on $\Delta B=2$ transitions
• Fat brane and seesaw mechanism in extra dimensions
• Inert scalar dark matter in an extra dimension inspired model
• Belle II Constraints on the Non-Minimal Universal Extra Dimensional Model