Multiplicities from black-hole formation in heavy-ion collisions

Details Multiplicities from black-hole formation in heavy-ion collisions Multiplicities from black-hole formation in heavy-ion collisions

2011-11-08

arxiv.org/abs/1111.1931v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

38 pages, 5 figures, 4 tables; minor typos corrected, figure 5 added, references added

Scientific paper

The formation of trapped surfaces in the head-on collision of shock waves in conformal and non-conformal backgrounds is investigated. The backgrounds in- clude all interesting confining and non-confining backgrounds that may be relevant for QCD. Several transverse profiles of the shocks are investigated including distributions that fall-off as powers or exponentials. Different ways of cutting-off the UV contributions (that are expected to be perturbative in QCD) are explored. Under some plausible simplifying assumptions our estimates are converted into predictions for multiplicities for heavy-ion collisions at RHIC and LHC.

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