The Letter Q (and Quantitative Constraints on the QGP)
  In this proceedings, we briefly review the methodology from [arXiv:0801.1665] for quantitatively constraining theoretical model parameters from experimental measurements including statistical and systematic uncertainties. We extend this methodology to additional parton energy-loss calculations for single inclusive high pT particle suppression, and also extend the comparisons to di-jet observations. This is only the start of a process to give quantitative constraints on the quark-gluon plasma, and substantial theoretical uncertainties need to be reduced/resolved in a parallel path. 
J.L. Nagle