Search for Critical Phenomena in Pb+Pb Collisions

Details Search for Critical Phenomena in Pb+Pb Collisions Search for Critical Phenomena in Pb+Pb Collisions

2001-01-20

arxiv.org/abs/nucl-ex/0101006v1

Physics

Nuclear Physics

Nuclear Experiment

6 pages, 2 figures. Proceedings of the XXXth International Symposium on the Multiparticle Dynamics, Tihany, Hungary, October 2

Scientific paper

NA44 uses a 512 channel Si pad array covering $1.5 <\eta < 3.3$ to study charged hadron production in Pb+Pb collisions at the CERN SPS. We apply a multiresolution analysis, based on a Discrete Wavelet Transformation, to probe the texture of particle distributions event-by-event, by simultaneous localization of features in space and scale. Scanning a broad range of multiplicities, we look for a possible critical behaviour in the power spectra of local density fluctuations. The data are compared with detailed simulations of detector response, using heavy ion event generators, and with a reference sample created via event mixing.

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