Journalartikel

Jahr der Veröffentlichung: 2001

Zeitschrift: Physical Review C

Bandnummer: 64

Heftnummer: 2

ISSN: 0556-2813

eISSN: 1089-490X

Open Access Status: Green

DOI Link: https://doi.org/10.1103/PhysRevC.64.024608

Verlag: American Physical Society

Abstract: 
We calculate the shadowing effect in nuclear photoabsorption at low photon energies (1-3 GeV) within a multiple scattering approach. We avoid some of the high energy approximations that are usually made in simple Glauber theory like the narrow width and the eikonal approximation. We find that the main contribution to nuclear shadowing at low energies stems from po mesons with masses well below their pole mass. We also show that the possibility of scattering in nonforward directions allows for a new contribution to shadowing at low energies: the production of neutral pions as intermediate hadronic states enhances the shadowing effect in the onset region. For light nuclei and small photon energies they give rise to about 30% of the total shadowing effect.

Harvard-Zitierstil: Falter, T., Leupold, S. and Mosel, U. (2001) Nuclear shadowing at low photon energies, Physical Review C, 64(2), Article 024608. https://doi.org/10.1103/PhysRevC.64.024608

APA-Zitierstil: Falter, T., Leupold, S., & Mosel, U. (2001). Nuclear shadowing at low photon energies. Physical Review C. 64(2), Article 024608. https://doi.org/10.1103/PhysRevC.64.024608