Correlation structure of STAR events
Abstract
STAR observes a complex picture of RHIC collisions where correlation effects of different origin -- initial state geometry, semi-hard scattering, hadronization -- coexist. I present STAR measurements of particle number and velocity field correlations obtained using a variety of techniques, including direct construction, fluctuation inversion and discrete wavelet transform. Connections between the techniques are discussed in detail. The resulting physics picture is presented in the context of identifying the relevant degrees of freedom and the likely equilibration mechanism.
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