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High pT pi0 Production and Angular Correlations in 158 AGeV p+A and Pb+Pb Collisions

Stefan Bathe
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Abstract

Recent results of the WA98 experiment with p and Pb induced reactions at 158 AGeV are presented. Azimuthal gamma-gamma correlations at high pT were studied in search for a signal of jet-like structures. A clear indication for back-to-back correlations can be seen in p+A with a strong dependence on the pT of the photons and the size of the system. In Pb+Pb collisions in plane elliptic flow has been observed. Results on transverse mass spectra of neutral pions measured at central rapidity are presented for impact parameter selected Pb+Pb collisions. In going from peripheral to medium central collisions there is a nuclear enhancement increasing with transverse mass similar to the Cronin effect, while for very central collisions this enhancement appears to be weaker than expected.

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Stefan Bathe. 2002-09-25. High pT pi0 Production and Angular Correlations in 158 AGeV p+A and Pb+Pb Collisions. https://doi.org/10.1016/s0375-9474(02)01475-6

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