In search of extra dimensions in the ongoing LHC experiments, signatures of
Randall-Sundrum (RS) lightest KK graviton have been one of the main focus in
recent years. The recent data from the dilepton decay channel at the LHC has
determined the experimental lower bound on the mass of the RS lightest
Kaluza-Klein (KK) graviton for different choices of underlying parameters of
the theory. In this work we explore the effects of the backreaction of the bulk
scalar field, which is employed to stabilise the RS model, in modifying the
couplings of the lightest KK graviton with the standard model (SM) matter
fields located on the visible brane. In such a modified background geometry we
show that the coupling of the lightest KK graviton with the SM matter fields
gets a significant suppression due to the inclusion of the backreaction of the
bulk stabilising scalar field. This implies that the backreaction parameter
weakens the signals from RS scenario in collider experiments which in turn
explains the non-visibility of KK graviton in colliders. Thus we show that the
modulus stabilisation plays a crucial role in the search of warped extra
dimensions in collider experiments.Comment: 12 pages, 1 figur
