Journalartikel

Jahr der Veröffentlichung: 1997

Seiten: 353-370

Zeitschrift: Nuclear Physics A: Nuclear and Hadronic Physics

Bandnummer: 613

Heftnummer: 4

ISSN: 0375-9474

Open Access Status: Green

DOI Link: https://doi.org/10.1016/S0375-9474(96)00408-3

Verlag: Elsevier

Abstract: 
We calculate the total photoabsorption cross section on nuclei in the energy range from 300 MeV to 1 GeV within the framework of a semi-classical phase space model. Besides medium modifications like Fermi motion and Pauli blocking we focus on the collision broadening of the involved resonances. The resonance contributions to the elementary cross section are fixed by fits to partial wave amplitudes of pion photoproduction. The cross sections for NR --> NN, needed for the calculation of collision broadening, are obtained by detailed balance from a fit to NN --> NN pi cross sections. We show that a reasonable collision broadening is not able to explain the experimentally observed disappearance of the D-13(1520)-resonance in the photoabsorption cross section on nuclei.

Harvard-Zitierstil: Effenberger, M., Hombach, A., Teis, S. and Mosel, U. (1997) Photoabsorption on nuclei, Nuclear Physics A: Nuclear and Hadronic Physics, 613(4), pp. 353-370. https://doi.org/10.1016/S0375-9474(96)00408-3

APA-Zitierstil: Effenberger, M., Hombach, A., Teis, S., & Mosel, U. (1997). Photoabsorption on nuclei. Nuclear Physics A: Nuclear and Hadronic Physics. 613(4), 353-370. https://doi.org/10.1016/S0375-9474(96)00408-3