Bonn 2010 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 20: Struktur und Dynamik von Kernen IV
HK 20.6: Vortrag
Dienstag, 16. März 2010, 15:30–15:45, HG VII
Dynamical compression of the 16O nucleus by a moving antiproton — •A.B. Larionov1,2,3, I.N. Mishustin1,2, L.M. Satarov1,2, and W. Greiner1 — 1Frankfurt Institute for Advanced Studies, J.W. Goethe-Universität, D-60438 Frankfurt am Main, Germany — 2Russian Research Center Kurchatov Institute, 123182 Moscow, Russia — 3Institut für Theoretische Physik, Universität Giessen
The Giessen Boltzmann-Uehling-Uhlenbeck (GiBUU) transport model with relativistic mean fields is adjusted and applied to antiproton-nucleus interactions in a wide beam-momentum range [1]. Using the antiproton-meson coupling constants determined from the analysis of p-absorption cross sections on nuclei at low beam momenta [1], we perform the GiBUU calculations of the dynamical response of the 16O nucleus to the moving antiproton [2]. It is shown that a slow antiproton (p ≤ 300 MeV/c) propagating through the nuclear interior induces the local nucleon density growth up to ∼ 2ρ0 caused by a strongly attractive p N potential. We evaluate the probability of antibaryon annihilation at enhanced nucleon density, which is ∼ 10−5 at the beam momenta or 3−10 GeV/c relevant for FAIR.
Supported by HIC for FAIR.
[1] A.B. Larionov, I.A. Pshenichnov, I.N. Mishustin, and W. Greiner, Phys. Rev. C 80, 021601(R) (2009).
[2] A.B. Larionov, I.N. Mishustin, L.M. Satarov, and W. Greiner,
arXiv:0912.1794