Converging upper and lower bounds for ground-state energies of atomic nuclei |
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Authors: | G P Kamuntavičius D Germanas R K Kalinauskas S Mickevičius R Žemaičinienė |
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Institution: | (1) M. Smoluchowski Institute of Physics, Jagellonian University, PL-30059 Cracow, Poland;(2) Institut für Theoretische Physik, Justus Liebig Universität Giessen, D-35392 Giessen, Germany;(3) W. Niewodniczaski Institute of Nuclear Physics, PL-31342 Cracow, Poland |
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Abstract: | The production of K+-mesons in proton-nucleus collisions from 1.0 to 2.3 GeV is analyzed with respect to one-step nucleon-nucleon (NN NYK+) and two-step -nucleon (N K+YN) or pion-nucleon (N K+Y) production channels on the basis of a coupled-channel (CBUU) transport approach including the kaon final-state-interactions (FSI). Momentum-dependent potentials for the nucleon, hyperon and kaon in the final state are included as well as K+ elastic rescattering in the target nucleus. The transport calculations are compared to the experimental K+ spectra taken at COSY-Jülich. Our systematic analysis of K+ spectra from 12C, 63Cu, 107Ag and 197Au targets as well as their momentum differential ratios gives a repulsive K+ potential of 20±5 MeV at normal nuclear matter density. |
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Keywords: | 13 60 Le Meson production 13 75 Jz Kaon-baryon interactions 14 40 Aq " target="_blank">gif" alt="Pgr" align="BASELINE" BORDER="0"> K and mesons" target="_blank">gif" alt="eegr" align="MIDDLE" BORDER="0"> mesons 25 40 -h Nucleon-induced reactions |
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