Mainz 2012 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 8: Hadronenstruktur und -spektroskopie

HK 8.6: Talk

Monday, March 19, 2012, 18:00–18:15, RW 1

Meson Production in Antiproton-Nucleus Interactions — •Stefanie Lourenco¹, Jan Haas¹, Horst Lenske¹, Thorsten Steinert¹, and Slawomir Wycech² — ¹Institut für Theoretische Physik, Universität Gießen — ²National Center for Nuclear Studies, Hoza 69, 00-681, Warsaw, Poland

With the upcoming FAIR@GSI facility a variety of new antimatter-experiments become accessible. An interesting case is to study properties of exotic nuclei by using antiprotons for spectroscopy. The main part of the interaction is the strong annihilation, which leads to various possible particles produced in the exit channel. For the initial state pA interaction we use an optical potential in t-ρ approximation, where the NN t-matrix taken from Juelich or Paris approach is folded with microscopical densities obtained from self-consistent Hartree-Fock Bogoliubov (HFB) calculations. Presently we focus on two meson production, namely pions. The final state interaction between the produced pions and the residual nucleus is taken into account by an optical potential of Kisslinger-type with additional higher resonances extensions. Results for elastic scattering, antiprotonic atoms and particle production on Ni isotopes are presented.

Supported in part by DFG, contract Le439/8−1