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Bochum 1998 – wissenschaftliches Programm

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HK: Hadronen und Kerne

HK 26: Electromagnetic Probes IV, Electro-, Photoproduction

HK 26.9: Vortrag

Dienstag, 17. März 1998, 16:15–16:30, B

π-Electroproduction and π-Induced Dileptonproduction off the Nucleon — •G. Penner, T. Feuster, and U. Mosel — Institut für Theoretische Physik, Universität Giessen

By introducing electromagnetic formfactors in the spacelike region we extend an effective Lagrangian model to describe electroproduction of π-mesons. The model considers Born terms, baryon resonances up to 1.7 GeV and vectormeson contributions (ρ, ω) [1]. Since the implemented formfactors are constructed in such a way that their analytic continuation in the timelike region is possible the model is also used for predictions of pion induced dilepton production in the VMD dominated dilepton mass region.

[1] T. Feuster and U. Mosel, Nucl. Phys. A 612, (1997) 375.


Supported by BMBF, DFG and GSI Darmstadt

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