An investigation of intermittency in proton-gold, oxygen-gold, sulphur-gold and sulphur-sulphur interactions at 200 GeV per nucleon

J. Bächler, J. Bartke, H. Białkowska, R. Bock, D. Brinkmann, R. Brockmann, P. Buncic, S. I. Chase, I. Derado, V. Eckardt, J. Eschke, D. Ferenc, B. Fleischmann, P. Foka, M. Fuchs, M. Gaździcki, E. Gładysz, J. W. Harris, W. Heck, M. HoffmannP. M. Jacobs, S. Kabana, K. Kadija, R. Keidel, J. Kosiec, M. Kowalski, A. Kühmichel, M. Lahanas, J. Y. Lee, A. Ljubicic, S. Margetis, J. T. Mitchell, R. J. Morse, E. Nappi, G. Odyniec, G. Paic, A. D. Panagiotou, A. Petridis, A. Piper, F. Posa, A. M. Poskanzer, H. G. Pugh, F. Pühlhofer, G. Rai, W. Rauch, R. Renfordt, W. Retyk, G. Roland, D. Röhrich, H. Rothard, K. Runge, A. Sandoval, J. Schambach, N. Schmitz, E. Schmoetten, I. Schneider, P. Seyboth, J. Seyerlein, E. Skrzypczak, P. Stefanski, R. Stock, H. Ströbele, L. Teitelbaum, M. L. Tincknell, G. Vassileiadis, M. Vassiliou, G. Vesztergombi, D. Vranic, S. Wenig, B. Wosiek

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The intermittency phenomenon is investigated in proton-gold, oxygen-gold, sulphur-gold and sulphur-sulphur collisions at 200 GeV per nucleon. The data were taken with the NA 35 streamer chamber detector at the CERN SPS. The data samples are carefully corrected for double counting of tracks and for contamination from photon conversions, particle decays and secondary interactions. The analysis is carried out in terms of factorial moments, using a new definition, and of correlation integrals. Both methods show the presence of nonstatistical fluctuations ("intermittency"). The main conclusions are: The observation of the effect for pairs of hadrons with negative charges and its near absence for pairs of opposite charges is consistent with the assumption that Bose-Einstein correlations yield the dominant contribution. The "intermittency" effect is not proportional to (d n/d y)-1 which would be expected in superposition models. The measured relation between the second and third factorial moment for negative hadrons indicates that genuine 3-particle correlations are small. The predictions of a Monte Carlo simulation which is based on the Lund Fritiof model with the inclusion of Bose-Einstein correlations agree with the experimental results.

Original languageEnglish
Pages (from-to)551-561
Number of pages11
JournalZeitschrift für Physik C Particles and Fields
Issue number4
Publication statusPublished - Dec 1 1994


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Bächler, J., Bartke, J., Białkowska, H., Bock, R., Brinkmann, D., Brockmann, R., Buncic, P., Chase, S. I., Derado, I., Eckardt, V., Eschke, J., Ferenc, D., Fleischmann, B., Foka, P., Fuchs, M., Gaździcki, M., Gładysz, E., Harris, J. W., Heck, W., ... Wosiek, B. (1994). An investigation of intermittency in proton-gold, oxygen-gold, sulphur-gold and sulphur-sulphur interactions at 200 GeV per nucleon. Zeitschrift für Physik C Particles and Fields, 61(4), 551-561.