Dresden 2013 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 73: Hadronenstruktur und -spektroskopie
HK 73.7: Vortrag
Donnerstag, 7. März 2013, 18:30–18:45, HSZ-105
Meson Production in Coherent Antiproton-Nucleus Reactions — •Stefanie Lourenco1, Horst Lenske1 und Slawomir Wycech2 — 1Institut für Theoretische Physik, Universität Gießen — 2National Centre for Nuclear Studies, Hoza 69, 00-681, Warsaw, Poland
Meson and hadron production by antinucleon-nucleus annihilation reactions is well suited to explore a broad spectrum of final particle configurations and physics phenomena. We are investigating coherent meson production in antiproton-nucleus reactions, intended as exploratory studies for the PANDA experiment and, if realized at a later stage of FAIR, also for the nuclear structure-oriented use of high energy antiprotons aimed for by the AIC proposal. Coherent reactions have the distinct advantage of a full quantum mechanical treatment of all parts of the production process. As a concrete and typical example we treat explicitly the case of two pion production. Two different reaction mechanisms are presented including initial and final state interactions. The underlying fundamental antinucleon-nucleon NN and pion-nucleon π N interactions enter into the optical potentials, which are folded with Hartree-Fock-Bogoliubov nuclear densities. Existing approaches to pion nucleus interactions have been extended to higher energies beyond the Δ-resonance. Cross sections are shown for the elementary processes and future experiments at FAIR.
Supported in part by DFG, contract Le439/8−1 and Le439/7−1