Questions Emerging from Discussions at the INT Program Quantifying the Properties of Hot QCD Matter

A eight-week program entitled “Quantifying the Properties of Hot QCD Matter” was held at the Institute for Nuclear Theory in May-July 2010 (Program 10-2a). The workshop website, including agenda and talks, can be found at: http://www.int.washington.edu/PROGRAMS/10-2a/. Each week was devoted to discussion in a specific area, as follows: (1) New results from LHC and RHIC; (2) Initial conditions, small x; (3) Viscous hydrodynamics I; (4) Viscous hydrodynamics II; (5) Jet quenching; (7) Heavy flavor and quarkonium; (8) Electromagnetic probes. This document is a list of questions and challenges assembled by the organizers of the program, compiled at the end of each week. No attempt has been made to unify the presentation of topics or to resolve conflicting statements, and only minor editing has been applied. This document should be regarded as a snapshot of the field in summer 2010, as seen through the biased lenses of the organizers.