Intermittency in central collisions of 16O+A at 14.6 A · GeV/c

E802 collaboration used the Target Multiplicity Array (TMA) detector for high statistics measurements of the intermittency in central collisions of heavy-ion reactions. The rigorous centrality cut using the Zero degree Calorimeter was applied for this analysis and the number of events passing the cut was 3555 for 16O+Al and 20994 for 16O+Cu. The scaled factorial moments(Fq) for both targets were calculated in the pseudorapidity range 1.2 < η < 2.2. A power-law growth of moments with decreasing bin size is observed down to δη∼ 0.1. MC calculations showed that the rolling-over observed in smaller bin sizes (less than δη = 0.1) was due to the detector effects such as the-finite resolution (ση = 0.03) or multi-hit loss. Contributions from gamma conversions, Dalitz decays and other detector effects were also estimated by MC calculations using Fritiof and GEANT