Polarization of the nuclear medium and RPA-type calculations in $K^+$ scattering from nuclei

Details Polarization of the nuclear medium and RPA-type calculations in $K^+$ scattering from nuclei Polarization of the nuclear medium and RPA-type calculations in $K^+$ scattering from nuclei

1993-11-30

arxiv.org/abs/nucl-th/9311036v1

Nucl.Phys. A572 (1994) 649-656; Erratum-ibid. A576 (1994) 639

Physics

Nuclear Physics

Nuclear Theory

11 pages, LaTeX, 3 figures available upon request, LPTB-93-9

Scientific paper

10.1016/0375-9474(94)90404-9

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 sea has been taken into account. This polarization has been calculated in the one-loop approximation but summed up to all orders (RPA-type calculation). This effect is found to be rather important but does not improve the agreement with experiment.

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