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Multiplicity distribution inK + Al andK + Au collisions at 250 GeV/c and a test of the multiple collision model |
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| Authors: | I. V. Ajinenko Yu. A. Belokopytoy H. Bialkowska H. Boettcher F. Bottorweck P. V. Chliapnikov F. Crijns A. de Roeck E. A. de Wolf K. Dziunikowska A. M. F. Endler A. Eskreys Z. C. Garutchava Y. Golubkov H. Graessler G. R. Gulkanyan P. van Hal R. Sh. Hakobyan T. Haupt W. Kittel D. Kisielewska B. B. Levchenko F. Meijers A. B. Micha?owska Th. Naumann V. I. Nikolaenko K. Olkiewicz B. Pawlik L. P. Petrovikh R. P?ll?nen V. M. Ronjin A. M. Rybin H. M. T. Saarikko W. Schmitz L. Scholten L. N. Smirnova O. G. Tchikilev A. G. Tomaradze V. A. Uvarov F. Verbeure R. Wischnewski EHS-NA Collaboration |
| Affiliation: | 1. Institute for High Energy Physics, SU-142284, Serpukhov, USSR 2. University of Warsaw and Institute of Nuclear Problems, PL-00681, Warsaw, Poland 3. Institut für Hochenergiephysik der Akademie der Wissenschaften der DDR, DDR-1615, Berlin-Zeuthen, German Democratic Republic 4. University of Nijmegen and NIKHEF-H, NL-6525 ED, Nijmegen, The Netherlands 5. Inter-University Institute for High Energies, B-1050, Brussels 6. Department of Physics, Universitaire Instelling Antwerpen, B-2610, Wilrijk, Belgium 9. Institute of Physics and Nuclear Techniques of the Academy of Mining and Metallurgy and Institute of Nuclear Physics, PL-30055, Krakow, Poland 10. Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil 11. Moscow State University, SU-119899, Moscow, USSR 12. III. Physikalisches Institut B, RWTH, D-5100, Aachen, Federal Republic of Germany 13. Institute of Physics, SU-375036, Yerevan, USSR 17. Department of High Energy Physics, University of Helsinki, SF-00170, Helsinki, Finland |
| Abstract: | Multiplicity distributions, observed inK + interactions with Al and Au nuclei at 250 GeV/c incident momentum are presented. They are analyzed in the framework of multiple collisions of the incident particle inside a nucleus. The probability distribution of the number of grey tracks is well described by the model of Andersson et al., if a negative binomial distribution is assumed for the distribution of the number of grey protons produced per elementary collision instead of the usual geometrical distribution. The analysis of the average and dispersion of the charge multiplicity distribution supports the validity of the multiple collision model, including results on correlations between forward and backward multiplicities. |
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