Higgs-radion similarity in production processes involving off-shell fermions

Abstract

The appearance of the radion field, which is associated with the spin-0 metric fluctuations combined in some manner with the scalar stabilizing field, and of the radion, the corresponding lowest Kaluza-Klein (KK) mode, is a generic prediction of stabilized brane world models. In such models the radion plays the role of the dilaton, and its mass may be somewhat smaller than that of all the KK modes of other particles propagating in the multidimensional bulk. Due to its origin, the radion couples to the trace of the energy-momentum tensor of the Standard Model, the interaction Lagrangian of the radion and the Standard Model fermions being similar to that of the SM Higgs-fermion interactions except for additional terms, which come into play only in the case of off-shell fermions. In the present paper it is shown that all the contributions to perturbative amplitudes of physical processes due to these additional terms are canceled out for both massless and massive off-shell fermions. Thus the additional fermion-radion terms in the interaction Lagrangian do not alter any production and decay properties of the radion compared to those of the Higgs boson.

arXiv comment13 pages, 3 figures

References in corpus (27)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• A Large Mass Hierarchy from a Small Extra Dimension
• Modulus Stabilization with Bulk Fields
• Modeling the fifth dimension with scalars and gravity
• Cosmology of Brane Models with Radion Stabilization
• Radion Dynamics and Electroweak Physics
• Phenomenology of a Stabilized Modulus
• Graviscalars from higher-dimensional metrics and curvature-Higgs mixing
• Wave function of the radion in a brane world
• Radion Phenomenology in Realistic Warped Space Models
• The scalar sector of the Randall-Sundrum model
• Phenomenology of Radion in Randall-Sundrum Scenario
• Radion and Higgs mixing at the LHC
• Precision Electroweak Data and the Mixed Radion-Higgs Sector of Warped Extra Dimensions
• Resonance at 125 GeV: Higgs or Dilaton/Radion?
• Dynamics of a Stabilized Radion and Duality
• Radion Couplings to Bulk Fields in the Randall-Sundrum Model
• An updated analysis of radion-higgs mixing in the light of LHC data
• Physical degrees of freedom in stabilized brane world models
• Radion/Dilaton-Higgs Mixing Phenomenology in Light of the LHC
• Higgs-dilaton(radion) system confronting the LHC Higgs data
• Energy scales in a stabilized brane world
• Higgs-radion unification: radius stabilization by an SU(2) bulk doublet and the 126 GeV scalar
• Testing extra dimensions below the production threshold of Kaluza-Klein excitations
• Constraints on radion in a warped extra dimension model from Higgs boson searches at the LHC
• Gravity in a stabilized brane world model in five-dimensional Brans-Dicke theory

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• Regarding the Radion in Randall-Sundrum Models with Brane Curvature
• Comparison of associated Higgs boson-radion and Higgs boson pair production processes
• On possible small-x effects in the Kaluza-Klein graviton and radion production at high energies
• Radion-Higgs Mixing in 2HDMs
• The $\gamma b\overline{b}$ production via ${\gamma }^{\ast }{\gamma }^{\ast }$ collisions at the ILC and LHC
• Is the radion a bulk Higgs doublet?
• The cross-section for the $\gamma e^{-}\to Z{e}^{-}\to l^{-}{l}^{+}{e}^{-}$ scattering at the LHeC