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RPA calculation of K+-nucleus cross sections with a density-dependent Dirac-Brueckner NN interaction

Centre d'Etudes Nucléaires de Bordeaux-Gradignan, Université Bordeaux I, rue du Solarium, 33175 Gradignan Cedex, France22UMR CNRS 6426.
Nuclear Physics A (Impact Factor: 2.5). 07/1995; 589(4):609-619. DOI: 10.1016/0375-9474(95)00126-L

ABSTRACT In the calculation of the K+-nucleus cross sections, the coupling of the mesons exchanged between the K+ and the target nucleons to the polarization of the Fermi and Dirac seas has been taken into account. This polarization has been calculated in the one-loop approximation but summed up to all orders (RPA approximation). For this calculation a density-dependent relativistic NN interaction reproducing the saturation curve of a Dirac-Brueckner calculation providing a good description of nuclear matter has been used. The agreement with experiment is considerably improved.

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