In-medium modifications of the S11(1535) resonance and eta photoproduction

Details In-medium modifications of the S11(1535) resonance and eta photoproduction In-medium modifications of the S11(1535) resonance and eta photoproduction

2003-06-05

arxiv.org/abs/nucl-th/0306024v2

Phys.Rev. C68 (2003) 044601

Physics

Nuclear Physics

Nuclear Theory

6 pages, 7 figures, minor changes in Fig. 4 and Sect. 3

Scientific paper

10.1103/PhysRevC.68.044601

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.

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