Azimuthal Correlations of High-Transverse-Momentumπ0Pairs

Abstract

We have studied correlations between two ${\pi }^0\text{'}\mathrm{s}$ produced at the CERN intersecting storage rings, utilizing detectors with large azimuthal acceptance. We find that the previously observed enhancement of two ${\pi }^0\text{'}\mathrm{s}$ produced at azimuthal difference near 180° can be made to vanish when certain kinematic effects are removed. However, we observe aligned configurations above 8 GeV of transverse energy unexplained by such kinematic effects.