Experimental probes of the Randall-Sundrum infinite extra dimension

The phenomenological possibilities of the Randall-Sundrum noncompact extra dimension scenario with the AdS horizon increased to approximately a millimeter length, corresponding to an effective brane tension of (TeV)4, are investigated. The corrections to the Newtonian potential are found to be the only observationally accessible probe of this scenario, as previously suggested in the literature. In particular, the presence of the continuum of Kaluza-Klein modes does not lead to any observable collider signatures. The extent to which experimental tests of Newtonian gravity can distinguish this scenario from the scenario of Arkani-Hamed, Dimopoulos, and Dvali, with 1- and 2-mm size extra dimensions, is explicitly demonstrated