  In this report we derive the couplings of the Randall-Sundrum radion to the
standard model higgs boson. We then use these couplings to determine the J=0
partial wave amplitude for the process $hh\to h\phi $. We find that at very
high energies (i.e. $s\gg m_h^2, \mp^2$) the s wave partial wave unitarity is
violated if $m_h>m_c\approx \sqrt{16\pi\vphi v}$ where $\vphi$ is the radion
vev. Interestingly this bound is independent of the radion mass to the leading
order. We also consider the high energy behaviour of the transition amplitudes
for some other processes in the RS scenario and compare them with their SM
behaviour.
