Precision Dijet Acoplanarity Tomography of the Chromo Structure of Perfect QCD Fluids

Dijet acoplanarity is dominated by vacuum (Sudakov) pQCD radiation even in Pb+Pb collisions, but future higher precision measurements of the tails of the acoplanarity distributions can help to resolve separately the medium opacity, chi = L/lambda, and the color screening scale mu(2) from the path averaged BDMS saturation scale Q(s)(2)[ chi, mu]= integral dL (q) over cap (E,T(L)) proportional to mu L-2/lambda, that is already well constrained by nuclear modification factor data on R-AA(p(T)). We compare Gaussian (BDMS) and non-Gaussian (GLV) models of medium broadening of vacuum (Sudakov) induced acoplanarity distributions in A+A. With few percent accuracy on the ratio of A+A to p+p distributions, experiments can easily identify non-Gaussian Landau and Rutherford tails due to multiple collisions. However, we find that sub-percent precision will be required to constrain chi and mu separately from Q(s).