February 20-22, 2008
Interpretation of shower characteristics that allow one to infer composition of the primary nuclei depend critically on models of hadronic interactions used to interpret the measurements. Extrapolations of several orders of magnitude beyond accelerator energies are required, and nuclear effects may be important.
The recent Auger results (Science, November 9, 2007) highlights the need for an improved understanding of hadronic interaction models at ultra-high energy, up to 300 TeV equivalent center of mass energy. The purpose of this workshop is to bring together a limited number (<40) of nuclear, particle and cosmic-ray physicists to clarify the existing situation and lay the groundwork for a better understanding of interactions of nuclei at ultra-high energy.
Updated: February 12, 2008