  We study top-(anti)quark pair production at the Tevatron and Large Hadron
Collider (LHC) in the context of the Minimal Length Scenario (MLS) of the
Arkani-Hamed, Dimopoulos and Dvali (ADD) model of extra dimensions (XDs). We
show that sizable effects onto both the integrated and differential cross
section due to graviton mediation are expected for a String scale, M_S, of
O(1-10TeV) and several XDs, \delta, all compatible with current experimental
constraints. Potential limits on M_S are extracted. We also highlight clear
phenomenological differences between a simple ADD scenario and its modification
based on using the MLS as a natural regulator for divergent amplitudes of
virtual KK graviton exchange.

High Energy Physics - Phenomenology;High Energy Physics - Experiment