Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-10-20
JHEP0612:049,2006
Physics
High Energy Physics
High Energy Physics - Phenomenology
LaTeX with equation.sty (included), 26 pages, 4 figures. Added a few references and one footnote
Scientific paper
10.1088/1126-6708/2006/12/049
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.
Alig Christian
Drees Manuel
Oda Kin-ya
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