In-medium modifications of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi>S</mml:mi><mml:mrow><mml:mn>11</mml:mn></mml:mrow></mml:msub><mml:mo>(</mml:mo><mml:mn>1535</mml:mn><mml:mo>)</mml:mo></mml:mrow></mml:math>resonance and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>η</mml:mi></mml:mrow></mml:math>photoproduction

Jane Lehr, M. Post, U. Mosel

Type: Article

Publication Date: 2003-10-01

Citations: 24

DOI: https://doi.org/10.1103/physrevc.68.044601

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.

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