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In the usual 5-dimensional Randall-Sundrum scenario with warped geometry ofthe extra compact dimension, the Goldberger-Wise mechanism for stabilisation ofthe radius of compactification can lead to a scalar field called the radion.The radion can have implications in TeV-scale physics, which can be especiallynoticeable if its vacuum expectation value (vev) is not far above a TeV.However a large mass of the first graviton excitation, which seems to besuggested by recent search limit, tends to make the radion vev, far too largein the minimal model. We show that this is not the case if a Gauss-Bonnet term,containing higher powers of the curvature, is present in the 5-dimensionalaction. As a result, a radion with vev in the range 1-1.5 TeV can be consistentwith the first graviton excitation mass well above 3 TeV.

Reconciling small radion vacuum expectation values with massive gravitons in an Einstein-Gauss-Bonnet warped geometry scenario