Distinguishing between the small ADD and RS black holes in accelerators

Abstract

In models with extra dimensions that accommodate a TeV-scale gravity, small black holes could be produced in near future accelerator experiments. Such small black holes, whose gravitational radius is mush smaller than the characteristic size of extra dimensions (compactification radius in flat or AdS radius in warped extra dimensions) can be very well described by asymptotically flat solutions, thus losing the information about the global geometry of the extra manifold. One might conclude that such small black holes would be indistinguishable in different scenarios. We argue that important differences still exist, especially regarding experimental signature in colliders, which may help us distinguish between the various extra dimensional scenarios. The main differences come from the fact that most of the models with the warped extra dimension have an additional discrete $Z_2$ symmetry that makes the brane behave as if it were an infinite tension brane.