Partial wave contributions to the antikaon potential at finite momentum

Details Partial wave contributions to the antikaon potential at finite momentum Partial wave contributions to the antikaon potential at finite momentum

2000-07-18

arxiv.org/abs/nucl-th/0007042v1

Nucl.Phys. A690 (2001) 547-566

Physics

Nuclear Physics

Nuclear Theory

20 pages, 7 figures

Scientific paper

10.1016/S0375-9474(00)00711-9

The momentum dependence of the antikaon optical potential in nuclear matter is obtained from a microscopic and self-consistent calculation using the meson-exchange J\"ulich $\bar{K}N$ interaction. Two self-consistent schemes are discussed, which would lead to substantially different predictions for the width of ${\bar K}$ nuclear bound states. The effect of higher partial waves of the $\bar{K}N$ interaction, beyond the L=0 component, is studied and found to have moderate but non-negligible effects on the ${\bar K}$ nuclear potential at zero momentum. At momenta as large as 500 MeV/c, relevant in the analysis of heavy-ion collisions, the higher partial partial waves modify the ${\bar K}$ optical potential by nearly a factor of two.

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