%0 Journal Article
%T Extra Dimensions: A View from the Top
%A Smaragda Lola
%A Prakash Mathews
%A Sreerup Raychaudhuri
%A K. Sridhar
%J Physics
%D 2000
%I arXiv
%R 10.1103/PhysRevE.83.036603
%X In models with compact extra dimensions, where the Standard Model fields are confined to a 3+1 dimensional hyperplane, the $t \bar t$ production cross-section at a hadron collider can receive significant contributions from multiple exchange of KK modes of the graviton. These are carefully computed in the well-known ADD and RS scenarios, taking the energy dependence of the sum over graviton propagators into account. Using data from Run-I of the Tevatron, 95% C.L. bounds on the parameter space of both models are derived. For Run-II of the Tevatron and LHC, discovery limits are estimated.
%U http://arxiv.org/abs/hep-ph/0010010v2