Summary
- We need precision measurements of centrality dependent processes
to understand physics phenomena in nuclear matter at high density.
- High granularity and precision of measurements is achieved by using
samples of selected events with close centrality properties.
- Uncertainties in Glauber model calculations affect both theoretical
and experimental results.
- Results shown as a function of centrality (fraction of cross-section) are least sensitive to Glauber model uncertainties of centrality determination
- Number of participating nucleons and N-N collisions is sensitive to details of Glauber calculations, so same type calculations must be used when comparing results using these numbers
- Optical approximation should be avoided, since it provides incorrect results in A-A collisions