Proton distributions in the target fragmentation region in proton-nucleus and nucleus-nucleus collisions at high energies

T. Åkesson, S. Almehed, A. L.S. Angelis, N. Armenise, H. Atherton, P. Aubry, H. W. Bartels, G. Beaudoin, J. M. Beaulieu, H. Beker, O. Benary, D. Bettoni, V. Bisi, I. Blevis, H. Bøggild, W. Cleland, M. Clemen, B. Collick, F. Corriveau, S. DaganK. Dederichs, S. Dell'Uomo, P. Depommier, R. C.E. Devenish, S. Di Liberto, N. DiGiacomo, J. R. Dodd, B. Dolgoshein, A. Drees, H. En'yo, B. Erlandsson, M. J. Esten, C. W. Fabjan, P. Fischer, Z. Fraenkel, A. Gaidot, F. Gibrat-Debu, P. Giubellino, P. Glässel, U. Goerlach, R. Haglund, L. A. Hamel, H. van Hecke, V. Hedberg, R. Heifetz, A. Hölscher, B. Jacak, G. Jarlskog, S. Johansson, H. Kraner, V. Kroh, F. Lamarche, C. Leroy, D. Lissauer, G. London, B. Lörstad, A. Lounis, F. Martelli, M. Masera, A. Marzari-Chiesa, M. A. Mazzoni, E. Mazzucato, M. L. McCubbin, N. A. McCubbin, P. McGaughey, F. Meddi, U. Mjörnmark, M. T. Muciaccia, S. Muraviev, M. Murray, M. Neubert, S. Nilsson, L. Olsen, Y. Oren, J. P. Pansart, Y. M. Park, A. Pfeiffer, F. Piuz, V. Polychronakos, G. Poulard, M. Price, D. Rahm, L. Ramello, L. Riccati, G. Romano, G. Rosa, L. Sandor, J. Schukraft, M. Sekimoto, B. Sellden, M. Seman, A. Shmeleva, V. Sidorov, S. Simone, Y. Sirois, H. Sletten, S. Smirnov, J. Soltani, W. Sondheim, H. J. Specht, E. Stern, I. Stumer, J. Sunier, V. Tcherniatin, H. H. Thodberg, J. Thompson, V. Tikhomirov, I. Tserruya, G. Vasseur, R. Veenhof, R. Wigmans, P. Yepes

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7 Scopus citations


We present measurements of the rapidity and transverse-momentum distributions of the protons emitted in S+W, O+W, and p+W reactions at 200 GeV/A around the target rapidity (y=1). The rapidity density rises linearly with the transverse energy for all three systems, but the slope for p+W is much steeper than for O+W and S+W. The rapidity density for p+W is much higher than predicted by summing single nucleonnucleon collisions without any nuclear effects, indicating substantial rescattering of the produced particles. The predictions of the VENUS 3 model, including rescattering, show reasonable agreement with the data for all three systems. We do not have evidence for a strong collective flow of the outgoing particles.

Original languageEnglish
Pages (from-to)183-191
Number of pages9
JournalZeitschrift für Physik C Particles and Fields
Issue number2
StatePublished - Jun 1992


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