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We argue that a simple modification of the TeV scale quantum gravity scenarioallows production of semiclassical black holes in particle collisions at theLHC. The key idea is that in models with large extra dimensions the strength ofgravity in the bulk can be higher than on the brane where we live. A well-knownexample of this situation is the case of warped extra dimensions. Even if theenergy of the collision is not sufficient to create a black hole on the brane,it may be enough to produce a particle which accelerates into the bulk up totrans-Planckian energy and creates a large black hole there. In a concretemodel we consider, the black hole is formed in a collision of the particle withits own image at an orbifold plane. When the particle in question carries someStandard Model gauge charges the created black hole gets attached to our braneby a string of the gauge flux. For a 4-dimensional observer such system looksas a long-lived charged state with the mass continuously decreasing due toHawking evaporation of the black hole. This provides a distinctive signature ofblack hole formation in our scenario.

Creating semiclassical black holes in collider experiments and keeping them on a string