Experimental probes of the Randall-Sundrum infinite extra dimension - art.no. 065002

The phenomenological possibilities of the Randall-Sundrum noncompact extra dimension scenario with the AdS horizon increased to approximately a millim eter length, corresponding to an effective brane tension of (Tev)(4), are i nvestigated. The corrections to the Newtonian potential are found to be the only observationally accessible probe of this scenario, as previously sugg ested in the literature. In particular, the presence of the continuum of Ka luza-Klein modes does not lead to any observable collider signatures. The e xtent 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.