content_image/311861.jpg
simply too small. Recent work has surprisingly shown that the observable con- sequences from the so-called ‘neck’ region, the bulk plasma trailing behind the quark jet, are qualitatively different for thermodynamic sources from pQCD and from AdS/CFT [354]; see Fig. 2.16. 

<img src='content_image/311861.jpg'>

## 2.4 Outline of Thesis 

In the next chapter a simultaneous qualitative description of intermediate- p$_{T}$ R$_{AA}$ ( p$_{T}$ ) and v$_{2}$ ( p$_{T}$ ) is developed predicated on a nonperturbative momentum punch at the boundary of the QGP and the vacuum. Another interesting source of this focusing of jets could come from the reduction of the Debye 

