Two-proton small-angle correlations in central heavy-ion collisions: A beam-energy- and system-size-dependent study (CROSBI ID 113142)
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Podaci o odgovornosti
Kotte, R. ; Alard, J.P. ; Andronić, A. ; Barret, V. ; Basrak, Zoran ; Bastid, N. ; Benabderrahmane, M.L. ; Čaplar, Roman ; Cordier, E. ; Crochet, P. ; Dupieux, P. ; Dželalija, Mile ; Fodor, Z. ; Gašparić, Igor ; Gobbi. A. ; Grishkin, Y. ; Hartmann, O.N. ; Herrmann, N. ; Hildenbrand, K.D. ; Hong, B. ; Kecskemeti, J. ; Kim, Y.J. ; Kirejczyk, M. ; Koczon, P. ; Korolija, Milorad ; Kress, T. ; Lebedev, A. ; Leifels, Y. ; Lopez, X. ; Merschmeyer, M. ; Mosner, J. ; Neubert, W. ; Pelte, D. ; Petrovići, M. ; Rami, F. ; Reisdorf, W. ; de Schauenburg, B. ; Schuttauf, A. ; Seres, Z. ; Sikora, B. ; Sim, K.S. ; Simion, V. ; Siwek-Wilczynska K. ; Smolyankin, V. ; Stoicea, G. ; Tyminski, Z. ; Wagner, P. ; Wisniewski, K. ; Wohlfarth, D. ; Xiao, Z.G. ; Yushmanov, Y. ; Zhilin, A.
engleski
Two-proton small-angle correlations in central heavy-ion collisions: A beam-energy- and system-size-dependent study
Small-angle correlations of pairs of protons emitted in central collisions of Ca + Ca, Ru + Ru and An + An at beam energies from 400 to 1500 MeV per nucleon are investigated with the FOPI detector system at SIS/GSI Darmstadt. Dependences on system size and beam energy are presented which extend the experimental data basis of pp correlations in the SIS energy range substantially. The size of the proton-emitting source is estimated by. comparing the experimental data with the output of a final-state interaction model which utilizes either static Gaussian sources or the one-body phase-space distribution of protons provided by the BUU transport approach. The trends in the experimental data, i.e. system size and beam energy dependences, are well reproduced by this hybrid model. However, the pp correlation function is found rather insensitive to the stiffness of the equation of state entering the transport model calculations.
proton-proton correlations; relativistic nuclear collisions; intermediate-mass fragments; intensity interferometry; velocity correlations; pion spectra
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