dual. Once the initial multiplicities were known they were then allowed to decay according to their published branching ratios until they reached the detector. With the full holographic dual to QCD currently unknown, we used the model of chapter 6. We compared our predictions to e $^{+}$e − collisions at centre-of-mass energies of 30 GeV and 91.2 GeV. Data which ranged over four orders of magnitude were predicted to the 50% level. The overall conclusion to be drawn from this thesis is that the AdS- QCD correspondence is in its infancy, but can still reproduce many aspects of QCD at very surprisingly accurate levels. Regulating the ultraviolet and infrared regimes of the dual are necessary steps that don’t disrupt the good predictions. Most excitingly, it seems that AdS-QCD models can model hadronization events very well with only a few free parameters. 123