Köln 2004 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 3: Electromagnetic and Hadronic Probes I

HK 3.5: Vortrag

Montag, 8. März 2004, 17:30–17:45, B

Electrodisintegration of the deuteron in the Δ-region — •Michael Schwamb and Hartmuth Arenhövel — Institut für Kernphysik, Johannes Gutenberg-Universität, D-55099 Mainz, Germany

A recently developed model for photodisintegration of the deuteron[1] has been extended to electrodisintegration. Our approach is based on a nonrelativistic coupled-channel approach with nucleonic, mesonic and Δ-degrees of freedom and contains for the first time full retardation in the potential and in the pionic meson-exchange currents. Moreover, hadronic as well as electromagnetic offshell contributions are considered. Our results show that retardation effects are significant above pion threshold, in particular in the Δ-region.

[1] M. Schwamb and H. Arenhövel, Nucl. Phys. A 690, 647 (2001), Nucl. Phys. A 690 682 (2001), Nucl. Phys. A 696 556 (2001)