Search for critical phenomena in Pb - Pb collisions

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 simultaneou...

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Detalles Bibliográficos
Autores principales: Kopytine, Mikhail L., 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.
Lenguaje:eng
Publicado: 2001
Materias:
Nuclear Physics - Experiment
Acceso en línea:http://cds.cern.ch/record/484630
Descripción
Sumario: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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