On transverse momentum event-by-event fluctuations in string hadronic models
1 Institut für Kernphysik, Universität Frankfurt,
2 Institute of Particle Physics, Huazhong Normal University, Wuhan, P.R. China
3 Institute of High Energy Physics, Beijing, P.R. China
Received: 23 October 1998 / Published online: 11 March 1999
Transverse momentum event-by-event fluctuations are studied within the string-hadronic model of high energy nuclear collisions, LUCIAE. Data on non-statistical pT fluctuations in p+p interactions are reproduced. Fluctuations of similar magnitude are predicted for nucleus-nucleus collisions, in contradiction to the preliminary NA49 results. The introduction of a string clustering mechanism (Firecracker Model) leads to a further, significant increase of pT fluctuations for nucleus-nucleus collisions. Secondary hadronic interactions, as implemented in LUCIAE, cause only a small reduction of pT fluctuations.