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because the “edge” of the medium is then poorly defined), the necessarily larger final punch magnitude will still be of order 1 GeV. The magnitude of this deconfinement-caused momentum boost must be independent of the parton’s momentum; hence v$_{2}$ ( p$_{T}$ ) will decrease like 1 /p$_{T}$ . Moreover, since ϵ is larger out of plane than in, a fixed Δ p$_{T}$ enhances R$_{AA}$ ( π/ 2) more than R$_{AA}$ (0). These are precisely the trends seen by$_{Phenix}$ [367]. Keeping the same values for κ , k , Δ p$_{T}$ , etc. as for Au + Au , we show in Fig. 3.3 the centrality-binned R$_{AA}$ and v$_{2}$ results for Cu + Cu in the three geometric energy loss models. 

<img src='content_image/305600.jpg'>

We can in fact go further in thinking about the origin of this deconfinement mechanism. Specifically we will find the change in the Debye mass of the jet µ$_{i}$ ( ⃗ x, t ) = gT ( ⃗ x$_{i}$, t$_{i}$ ) as it propagates through the medium provides the right order of magnitude momentum punch. In moving from position i to i + 1 one 

