116 Chapter 4: Fluctuations in Jet Tomography ϵ > 1 region. Figure 4.12: Lhc predictions of pion R$_{AA}$ ( p$_{T}$ ) for several energy loss models. Curves correspond to WHDG [152], GLV [397], PQM [296], and ASW [306]. For the latter two, rw indicates the use of Eq. (4.13) for overabsorption; otherwise Eq. (4.12) was employed. Also for the latter two, ˆ q = 100 and ˆ q = 68 were the values of the ASW input parameter, respectively. Notice the sharp rise in p$_{T}$ for the WHDG and GLV curves as opposed to the flatness of the ASW and PQM ASW results. For heavy quark R$_{AA}$ ( p$_{T}$ ) predictions from WHDG see Chapter 5. 4.7 Conclusions While the results presented in this paper are encouraging, further improve- ments of the jet quenching theory will be required before stronger conclusions