Energy flow and stopping in relativistic heavy-ion collisions at E sub lab / A =14. 6 GeV

Collisions of {sup 28}Si+Al, Cu, Pb at {ital E}{sub lab}/{ital A}=14.6 GeV were studied in a calorimetry-based experiment at the BNL Alternating Gradient Synchrotron. Transverse-energy production was measured for pseudorapidities {minus}0.5{lt}{eta}{lt}0.8. Correlations with the spectra and multipli...

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Veröffentlicht in:Physical review letters 1990-03, Vol.64:11
Hauptverfasser: Barrette, J., Bellwied, R., Braun-Munzinger, P., Cleland, W.E., David, G., Duek, E., Fatyga, M., Fox, D., Gavron, A., Greene, S.V., Hall, J., Hemmick, T.K., Heifetz, R., Herman, M., Herrmann, N., Hogue, R.W., Ingold, G., Jayananda, K., Kraus, D., Lissauer, D., Llope, W.J., Legault, A., Ludlam, T., Majka, R., Makowiecki, D., Mark, S.K., Mitchell, J.T., Muthuswamy, M., O'Brien, E., Olsen, L., Polychronakos, V., Rawool-Sullivan, M., Rotondo, F., Sandweiss, J., Shivakumar, B., Simon, J., Sonnadara, U., Sullivan, J.P., Stachel, J., Sunier, J., Takai, H., Throwe, T., Van Hecke, H., Waters, L., Woody, C., Wolf, K., Wolfe, D., E814 Collaboration
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Sprache:eng
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Zusammenfassung:Collisions of {sup 28}Si+Al, Cu, Pb at {ital E}{sub lab}/{ital A}=14.6 GeV were studied in a calorimetry-based experiment at the BNL Alternating Gradient Synchrotron. Transverse-energy production was measured for pseudorapidities {minus}0.5{lt}{eta}{lt}0.8. Correlations with the spectra and multiplicity of neutrons and protons emitted into a forward 0.8{degree} cone demonstrate quantitatively the large amount of nuclear stopping observed in these reactions. Calculations in hadronic-fireball or nucleon-nucleon based models underpredict the measured transverse-energy production for Si+Pb and indicate the need to include rescattering of secondaries and /or contributions from target fragmentation.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.64.1219