Abstract
Correlations in the hadron distributions produced in relativistic Au+Au collisions are studied in the discrete wavelet expansion method. The analysis is performed in the space of pseudorapidity (|η| ≤ 1) and azimuth (full 2π) in bins of transverse momentum (p t) from 0.14 ≤ p t ≤ 2.1 GeV/c. In peripheral Au+Au collisions a correlation structure ascribed to minijet fragmentation is observed. It evolves with collision centrality and p t in a way not seen before, which suggests strong dissipation of minijet fragmentation in the longitudinally expanding medium.