Is the Lightest Kaluza-Klein Particle a Viable Dark Matter Candidate?

Abstract

In models with universal extra dimensions (i.e. in which all Standard Model fields, including fermions, propagate into compact extra dimensions) momentum conservation in the extra dimensions leads to the conservation of Kaluza--Klein (KK) number at each vertex. KK number is violated by loop effects because of the orbifold imposed to reproduce the chiral Standard Model with zero modes, however, a KK parity remains at any order in perturbation theory which leads to the existence of a stable lightest KK particle (LKP). In addition, the degeneracy in the KK spectrum is lifted by radiative corrections so that all other KK particles eventually decay into the LKP. We investigate cases where the Standard Model lives in five or six dimensions with compactification radius of TeV${}^{-1}$ size and the LKP is the first massive state in the KK tower of either the photon or the neutrino. We derive the relic density of the LKP under a variety of assumptions about the spectrum of first tier KK modes. We find that both the KK photon and the KK neutrino, with masses at the TeV scale, may have appropriate annihilation cross sections to account for the dark matter, ${\Omega }_M\sim 0.3$.

31 pages, 12 figures; v2: A couple of references added, a few minor clarifications (on KK parity and on the 6d case)

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• Phenomenology of $keV$ sterile neutrino in minimal extended seesaw
• On the problem of inflation in nonlinear multidimensional cosmological models
• Analysis of Fermi-LAT data from Tucana-II: Possible constraints on the Dark Matter models with an intriguing hint of a signal
• AMS-02 and Next-to-Minimal Universal Extra Dimensions
• Interpretation of the cosmic ray positron and electron excesses with an annihilating-decaying dark matter scenario
• Inelastic WIMP-nucleus scattering to the first excited state in ${}^{125}$Te
• Unitarity Constraints on non-minimal Universal Extra Dimensional Model
• Warping the Universal Extra Dimensions
• Addressing $\gamma$-ray emissions from dark matter annihilations in 45 milky way satellite galaxies and in extragalactic sources with particle dark matter models
• Minimal and non-minimal Universal Extra Dimension models in the light of LHC data at 13 TeV
• Yang-Mills theories with an arbitrary number of compactified extra dimensions
• Constraints on dark matter models from the observation of Triangulum-II with the Fermi Large Area Telescope
• Universal Extra Dimension models with gravity mediated decays after LHC Run II data
• Higgs Dark Matter in UEDs: A Good WIMP with Bad Detection Prospects
• $B\to K{\eta }^{(\prime )}\gamma$ decays in the standard model and in scenarios with universal extra dimensions
• On degenerate metrics, dark matter and unification
• Two-photon annihilation of singlet cold dark matters due to noncommutative space-time
• Boosting the dark matter signal with Coulomb resonances
• Large Jet Multiplicities and New Physics at the LHC
• A New Method for the Spin Determination of Dark Matter
• Distinctive ultraviolet structure of extra-dimensional Yang-Mills theories by integration of heavy Kaluza-Klein modes
• Photons from Dark Matter in a (non-Universal) Extra Dimension model
• Heavy sterile neutrino in dark matter searches
• Dark Matter and Higgs Sector
• Dark matter in Inert Doublet Model with one scalar singlet and $U(1{)}_X$ gauge symmetry
• Contact interactions and top-philic scalar dark matter
• Odd Decays from Even Anomalies: Gauge Mediation Signatures Without SUSY
• Indirect Detection of Kaluza-Klein Dark Matter from Latticized Universal Dimensions
• Freezing In with Lepton Flavored Fermions
• Limits on Kaluza-Klein dark matter annihilation in the Sun from recent IceCube results
• Effects of universal extra dimensions on top-quark electromagnetic interactions
• Dark matter and localised fermions from spherical orbifolds?
• Results from PAMELA, ATIC and FERMI : Pulsars or Dark Matter ?
• Successful Yukawa structures in Warped Extra Dimensions
• Constraints on Universal Extra Dimension models with gravity mediated decays from ATLAS diphoton search
• Implications on the mUED model from the early LHC data on $\ell+\met$ signal
• Particle Dark Matter Candidates
• Inflationary limits on the size of compact extra space
• A Search for Annihilating Dark Matter in 47 Tucanae and Omega Centauri
• Low Mass Pseudoscalar Dark Matter in an Extended B - L Model
• Vector Self-Interacting Dark Matter
• Dark Matter Freeze-out during $\mathrm{SU}(2{)}_{\mathrm{L}}$ Confinement
• Theoretical Predictions for Collider Searches
• Power law in a gauge-invariant cut-off regularisation
• Analysis of Direct and Indirect Detection of Fermionic Dark Matter of 6-Dimensional Effective Field Theory
• Strong Constraints on Dark Photon and Scalar Dark Matter Decay from INTEGRAL and AMS-02 data
• Final state Sommerfeld effect on dark matter relic abundance
• Warping, Extra Dimensions and a Slice of AdS_d
• Parallel Universe, Dark Matter and Invisible Higgs Decays
• Graviton production from D-string recombination and annihilation
• Probing Dark Matter via Effective Field Theory Approach
• Constraining Bosonic Supersymmetry from Higgs results and 8 TeV ATLAS multi-jets plus missing energy data
• Gauge-invariant approach to the beta function in Yang-Mills theories with universal extra dimensions
• Limits on Kaluza-Klein Portal Dark Matter Models
• Properties of subhalos in the interacting dark matter scenario
• Sub-keV dark matter can strongly ionize molecular clouds
• The dark Stodolsky effect: constraining effective dark matter operators with spin-dependent interactions
• Indirect search for Dark Matter with H.E.S.S
• Collider Physics and Cosmology
• The impact of nonminimal Universal Extra Dimensional model on $\Delta B=2$ transitions
• Radion stabilization from the vacuum on flat extra dimensions
• The gamma-ray spectral feature from Kaluza-Klein dark matter annihilation and its observability
• CDMS, Supersymmetry and Extra Dimensions
• Reconstruction of Cosmological Evolution in the Presence of Extra Dimensions
• Emerging Internal Symmetries from Effective Spacetimes
• The 750 GeV threshold to a new particle world
• Dark matter search with CMB: a study of foregrounds
• Sensitivity forecasts for gravitational-wave detectors to dark matter decaying into gravitons
• Dark Matter Detection in Space
• Cosmological Constraints on Radion Evolution in the Universal Extra Dimension Model
• One loop radiative correction to Kaluza-Klein masses in $S^2/Z_2$ universal extra dimensional model
• Electroweak Dark Matter
• Cosmological abundance of primordial black holes in mixed dark matter scenarios incorporating Kaluza-Klein dark matter
• Dark matter as a localized scalar in the extra dimension
• Gauge structure of Yang-Mills theories with extra dimensions
• Particle Dark Matter from Physics Beyond the Standard Model
• Bounds on the compactification scale of two universal extra dimensions from exclusive $b\to s\gamma$ decays
• The electron plus positron spectrum from annihilation of Kaluza-Klein dark matter in the Galaxy
• Radiative corrections to the lightest KK states in the T^2/(Z_2\times Z_2') orbifold
• Spectral cutoffs in indirect dark matter searches
• Inert scalar dark matter in an extra dimension inspired model
• Particle Identification for Physics beyond the LHC
• High Energy Neutrinos as a Probe for New Physics and Astrophysics
• Physics at Future Linear Colliders
• INTEGRAL, eROSITA and Voyager Constraints on Light Bosonic Dark Matter: ALPs, Dark Photons, Scalars, $B-L$ and $L_i-L_j$ Vectors
• Is it possible to unify three kinds of Dark Matters into a Kaluza-Klein Neutrino?
• Cusped Mass Density Profiles and Magnification Ratios of Double Image Gravitational Lenses
• Compatibility of the Dimensional Reduction and Variation Procedures for a Quadratic Curvature Model with a Kaluza-Klein Ansatz
• The potential of diffuse Galactic Ridge neutrino measurements to constrain dark matter
• The effect of the curvature-scalar mixing on the annihilation cross sections of dark matter scalar and unparticle dark matter
• QCD radiative correction to pair-annihilation of spin-1 bosonic Dark Matter
• Constraints on UED KK-neutrino dark matter from magnetic dipole moments
• Annihilation cross sections and interaction couplings of the dark matter candidates in the warped and flat extra dimensions
• Belle II Constraints on the Non-Minimal Universal Extra Dimensional Model
• Exact Solutions with Asymptotically Flat Galactic Rotation Curves
• Naturally Resonant Dark Matter from Extra Dimensions
• Determination of Dark Matter Properties at High-Energy Colliders