Negative binomials and multiplicity distributions in 250 GeV/cK+ and π+ interactions on Al and Au nuclei

Autor: Ajinenko, I. V., Belokopytov, Yu. A., Bialkowska, H., Boettcher, H., Botterweck, F., Charlet, M., Chliapnikov, P. V., Crijns, F., De Roeck, A., De Wolf, D. A., Dziunikowska, K., Endler, A. M. F., Eskreys, A., Garutchava, Z. C., Golubkov, Y. A., Gulkanyan, G. R., van Hal, P., Hakobyan, R. Sh., Haupt, T., Kittel, W., Kisielewska, D., Levchenko, B. B., Machowski, B., Meijers, F., Michałowska, A. B., Nikolaenko, V. I., Olkiewicz, K., Pöllänen, R., Ronjin, V. M., Rybin, A. M., Saarikko, H. M. T., Scholten, L., Smirnova, L. N., Tchikilev, O. G., Uvarov, V. A., Verbeure, F., Wischnewski, R.
Zdroj: Zeitschrift für Physik C Particles and Fields; December 1990, Vol. 46 Issue: 4 p569-582, 14p
Abstrakt: The negative binomial distribution (NBD) is fitted to all charged and to negative particle multiplicity distributions in restricted rapidity intervals, both in the forward and backward c.m. hemispheres of positive meson interactions on Al and Au nuclei. For negative particle multiplicity distributions, the NBD parameters are also determined as a function ofng, the number of grey tracks, corresponding to varying number of intranuclear collisions. The data are interpreted in terms of the clan picture of Giovannini and Van Hove and compared to the MCMHA and Fritiof models. Both models reproduce quite well the global multiplicity distributions, but not when sub-samples are considered with fixed number of grey tracks. Regularities are better visible on the parton than on the particle level.
Databáze: Supplemental Index
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