In-medium modifications of the S(11)(1535) resonance and eta photoproduction

Lehr, J.; Post, M.; Mosel, U.

doi:10.1103/PhysRevC.68.044601

In-medium modifications of the S(11)(1535) resonance and eta photoproduction

Jun, 2003

10 pages

Published in:

Phys.Rev.C 68 (2003) 044601

e-Print:

nucl-th/0306024 [nucl-th]

DOI:

10.1103/PhysRevC.68.044601

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Abstract:

We investigate the influence of possible in-medium modifications of the S11(1535) in eta photoproduction in nuclei. Besides Fermi motion, Pauli blocking and binding effects also collisional broadening is accounted for. The in-medium width is obtained from a realistic resonance-hole model. Results on eta photoproduction are obtained from a semi-classical BUU transport model and compared with data. We find that calculations including a momentum dependent nucleon and resonance potential are in agreement with the recent KEK data. In contrast, collisional broadening has only little influence.

24.10.Nz
25.20.Lj
photon nucleus: nuclear reaction
N(1535): effect
eta: photoproduction
transport theory: semiclassical
final-state interaction
potential: momentum dependence
numerical calculations: interpretation of experiments

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Figures(0)

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