Author(s)
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Kopytine, Mikhail L. (SUNY, Stony Brook) ; Bearden, I. ; Boggild, H. ; Boissevain, J. ; Conin, L. ; Dodd, J. ; Erazmus, B. ; Esumi, S. ; Fabjan, C.W. ; Ferenc, D. ; Fields, D.E. ; Franz, A. ; Gaardhoje, J.J. ; Hansen, A.G. ; Hansen, O. ; Hardtke, D. ; Van Hecke, H. ; Holzer, E.B. ; Humanic, T.J. ; Hummel, P. ; Jacak, B.V. ; Jayanti, R. ; Kaimi, K. ; Kaneta, M. ; Kohama, T. ; Leltchouk, M. ; Ljubicic, A., Jr. ; Lorstad, B. ; Maeda, N. ; Martin, L. ; Medvedev, A. ; Murray, M. ; Ohnishi, H. ; Paic, G. ; Pandey, S.U. ; Piuz, F. ; Pluta, J. ; Polychronakos, V. ; Potekhin, M. ; Poulard, G. ; Reichhold, D. ; Sakaguchi, A. ; Schmidt-Sorensen, J. ; Simon-Gillo, J. ; Sondheim, W. ; Sugitate, T. ; Sullivan, J.P. ; Sumi, Y. ; Willis, W.J. ; Wolf, K.L. ; Xu, N. ; Zachary, D.S. |
Abstract
| 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. |