  In models with ``large'' and/or warped extra dimensions, the
higher-dimensional Planck scale may be as low as a TeV. In that case black
holes with masses of a few TeV are expected to be produced copiously in
multi-TeV collisions, in particular at the LHC. These black holes decay through
Hawking radiation into typically O(20) Standard Model particles. Most of these
particles would be strongly interacting. Naively this would lead to a final
state containing 10 or so hadronic jets. However, it has been argued that the
density of strongly interacting particles would be so large that they
thermalize, forming a ``chromosphere'' rather than well-defined jets. In order
to investigate this, we perform a QCD simulation which includes parton-parton
scattering in addition to parton showering. We find the effects of parton
scattering to remain small for all cases we studied, leading to the conclusion
that the decays of black holes with masses within the reach of the LHC will not
lead to the formation of chromospheres.
