Universal extra dimensions and Z->b bar-b

Abstract

We study, at the one loop level, the dominant contributions from a single universal extra dimension to the process (Z\to b\bar{b}). By resorting to the gaugeless limit of the theory we explain why the result is expected to display a strong dependence on the mass of the top-quark, not identified in the early literature. A detailed calculation corroborates this expectation, giving rise to a lower bound for the compactification scale which is comparable to that obtained from the $\rho$ parameter. An estimate of the subleading corrections is furnished, together with a qualitative discussion on the difference between the present results and those derived previously for the non-universal case.

16 pages, 4 figures, revtex4

References in corpus (21)

• The Hierarchy Problem and New Dimensions at a Millimeter
• A Unified Approach to the Classical Statistical Analysis of Small Signals
• Weak Decays Beyond Leading Logarithms
• Phenomenology, Astrophysics and Cosmology of Theories with Sub-Millimeter Dimensions and TeV Scale Quantum Gravity
• Bounds on Universal Extra Dimensions
• The Standard Model from extra dimensions
• Limits on extra dimensions in orbifold compactifications of superstrings
• Production of Kaluza-Klein States at Future Colliders
• Electroweak precision measurements and collider probes of the Standard Model with large extra dimensions
• Electroweak and Flavor Physics in Extensions of the Standard Model with Large Extra Dimensions
• Effects of SM Kaluza-Klein excitations on electroweak observables
• Radiative Correction Effects of a Very Heavy Top
• Direct collider signatures of large extra dimensions
• Electroweak Constraints on Extended Models with Extra Dimensions
• Effects of Extra Space-time Dimensions on the Fermi Constant
• Minimal Higher-Dimensional Extensions of the Standard Model and Electroweak Observables
• Probing the Nature of Compactification with Kaluza-Klein Excitations at the Large Hadron Collider
• Signals from extra dimensions decoupled from the compactification scale
• Extra dimensions at the one loop level: Z -> b,b(bar) and B-B(bar) mixing
• Hard $m_t$ Corrections as a Probe of the Symmetry Breaking Sector
• Electroweak Constraints on Minimal Higher-Dimensional Extensions of the Standard Model

Cited by in corpus (76)

• Pinch Technique: Theory and Applications
• Dark Matter and Collider Phenomenology of Universal Extra Dimensions
• Discrimination of Supersymmetry and Universal Extra Dimensions at Hadron Colliders
• Precise Calculation of the Relic Density of Kaluza-Klein Dark Matter in Universal Extra Dimensions
• The Impact of Universal Extra Dimensions on B -> X_s gamma, B -> X_s gluon, B -> X_s mu^+ mu^-, K_L -> pi^0 e^ +e^-, and epsilon'/epsilon
• A Three Site Higgsless Model
• Bound on minimal universal extra dimensions from Bbar -> X_s gamma
• Graviton Cosmology in Universal Extra Dimensions
• Non-minimal universal extra dimensions
• Power law scaling in Universal Extra Dimension scenarios
• Relic abundance of dark matter in the minimal universal extra dimension model
• Six-Dimensional Gauge Theory on the Chiral Square
• Significant effects of second KK particles on LKP dark matter physics
• Probing Particle Physics with IceCube
• Relic Abundance of LKP Dark Matter in UED model including Effects of Second KK Resonances
• Current LHC Constraints on Minimal Universal Extra Dimensions
• Probing Universal Extra Dimension at the International Linear Collider
• Radiative Effects on the Chiral Square
• Minimal Universal Extra Dimensions in CalcHEP/CompHEP
• The International Linear Collider as a Kaluza-Klein Factory
• (Lambda_b -> Lambda l^+ l^-) decay in universal extra dimensions
• Exploring the Universal Extra Dimension at the LHC
• Search for the minimal universal extra dimension model at the LHC with $\sqrt{s}$=7 TeV
• Probing Minimal 5D Extensions of the Standard Model: From LEP to an e^+e^- Linear Collider
• Determining the Sign of the Z-Penguin Amplitude
• Universal Extra-Dimensional models with boundary localized kinetic terms: Probing at the LHC
• Rare decays of ${\Lambda }_b\to \Lambda \gamma$ and ${\Lambda }_b\to \Lambda l^{+}{l}^{-}$ in universal extra dimension model
• The Universal Extra Dimensional Model with $S^2/Z_2$ extra-space
• Study of FCNC mediated rare B_s decays in a single universal extra dimension scenario
• LHC limits on KK-parity non-conservation in the strong sector of universal extra-dimension models
• Search for Higgs bosons of the Universal Extra Dimensions at the Large Hadron Collider
• Double-lepton polarization asymmetries in (Lambda_b -> Lambda l^+ l^-) decay in universal extra dimension model
• Efficient Coannihilation Process through Strong Higgs Self-Coupling in LKP Dark Matter Annihilation
• Boundary Localized Terms in Universal Extra-Dimensional Models through a Dark Matter perspective
• Enriching the exploration of the mUED model with event shape variables at the CERN LHC
• Limits on a muon flux from Kaluza-Klein dark matter annihilations in the Sun from the IceCube 22-string detector
• Bounds on Universal Extra Dimension from LHC Run I and II data
• Phenomenology of spinless adjoints in two Universal Extra Dimensions
• Production of Higgs boson excitations of universal extra dimension at the Large Hadron Collider
• Solving cosmological problem in universal extra dimension models by introducing Dirac neutrino
• A comparison of ultraviolet sensitivities in universal, nonuniversal, and split extra dimensional models
• Gauge invariance and quantization of Yang-Mills theories in extra dimensions
• Productions of second Kaluza-Klein gauge bosons in the minimal universal extra dimension model at LHC
• Universal Extra Dimensions, Radiative Returns and the Inverse Problem at a Linear e+e- Collider
• Multijet Discriminators for New Physics in Leptonic Signals at the LHC
• Top-Higgs and Top-pion phenomenology in the Top Triangle Moose model
• One-loop effects of extra dimensions on the WWγand WWZ vertices
• Extra-dimensional relaxation of the upper limit of the lightest supersymmetric neutral Higgs mass
• Big Bang Nucleosynthesis Constraints on Universal Extra Dimensions and Varying Fundamental Constants
• Effects of Universal Extra Dimensions on Higgs signals at LHC
• Identifying the contributions of Universal Extra Dimensions in the Higgs sector at linear e+ e- colliders
• Ultraviolet sensitivity of rare decays in nonuniversal extra dimensional models
• KK-parity non-conservation in UED confronts LHC data
• The Excited Scalars of the Universal Extra Dimension Model
• Custodial Isospin Violation in the Lee-Wick Standard Model
• FCNC Top Quark Decays in Extra Dimensions
• The effects of non-universal extra dimensions on the fermion electric dipole moments in the two Higgs doublet model
• Universal Extra Dimensions and Charged LKPs
• Phenomenology of Universal Extra Dimensions
• Z to b bbar and Chiral Currents in Higgsless Models
• Looking for $B\to X_s{\ell }^{+}{\ell }^{-}$ in non-minimal Universal Extra Dimensional model
• Patterns of Custodial Isospin Violation from a Composite Top
• Implications of extra dimensions on the effective charge and the beta function in quantum electrodynamics
• Beautiful mirrors for a pNGB Higgs
• Minimal and non-minimal Universal Extra Dimension models in the light of LHC data at 13 TeV
• KK-number non-conserving decays: Signal of n = 2 excitations of Extra-Dimensional Models at the LHC
• Bounds on models with one latticized extra dimension
• Gauge-invariant approach to the beta function in Yang-Mills theories with universal extra dimensions
• The possible effects of non-universal extra dimensions on t\to c l_i^- l_j^+ and H^0 \to h^0 (A^0) l_i^- l_j^+ decays in the general two Higgs Doublet model
• The impact of nonminimal Universal Extra Dimensional model on $\Delta B=2$ transitions
• Collider Implications of a Non-Universal Higgs
• One loop radiative correction to Kaluza-Klein masses in $S^2/Z_2$ universal extra dimensional model
• Constraints on Little Higgs with Fully-Radiative Electroweak Symmetry Breaking
• A Mechanism for Kaluza-Klein Number Violation in UED and Implications for LHC
• The $Zb\bar{b}$ vertex in a left-right model
• The Limits of Custodial Symmetry