“…Another example is the distributions in the scattering angle θ * of KK decay leptons or photons in the KK graviton center-of-mass frame. At LO, the on-shell gluon-gluon fusion processes, which dominate at the LHC energies, behave as 1−cos 4 θ * and 1+6 cos 2 θ * +cos 4 θ * for dilepton and diphoton decay modes, respectively (see, for example, [38,39]). In the k Tfactorization approach, taking into account the initial gluon off-shellness can result to the deviations from these simple forms, as it is demonstrated in Figs.…”