  Production of exotic states at LHC is considered in the large radius
compactification scenario. We envisage a five dimensional theory for a scalar
field in five dimensional flat spacetime. It is compactified on a circle,
$S^1$, with radius, $R$. The radius is assumed to be in TeV scale appealing to
LRC hypothesis. The production of Kaluza-Klein states whose masses lie in the
vicinity of TeV range is considered. Instead of appealing to any specific
model, bounds on inelastic cross sections and near forward differental cross
section are derived from the Lehmann-Symanzik-Zimmermann (LSZ) formulation. We
consider decompactified theory should compactification radius be large enough
to unravel the fifth spacial dimension in LHC energy scale. Bounds on cross
sections are also derived for this scenario. We present bounds on inclusive
cross sections for reactions like $a+b\rightarrow c+X$, X being unobserved
states. We plot the bounds as a function of energy and propose that these
bounds might be useful for search of exotic states in LHC experiments like
ATLAS and CMS.
