Covariant kaon dynamics and kaon flow in heavy ion collisions

Details Covariant kaon dynamics and kaon flow in heavy ion collisions Covariant kaon dynamics and kaon flow in heavy ion collisions

2002-11-27

arxiv.org/abs/nucl-th/0211088v2

Phys.Rev. C69 (2004) 034907

Physics

Nuclear Physics

Nuclear Theory

24 pages, 6 figures

Scientific paper

10.1103/PhysRevC.69.034907

The influence of the chiral mean field on the $K^+$ transverse flow in heavy ion collisions at SIS energy is investigated within covariant kaon dynamics. For the kaon mesons inside the nuclear medium a quasi-particle picture including scalar and vector fields is adopted and compared to the standard treatment with a static potential. It is confirmed that a Lorentz force from spatial component of the vector field provides an important contribution to the in-medium kaon dynamics and strongly counterbalances the influence of the vector potential on the $K^+$ in-plane flow. The FOPI data can be reasonably described using in-medium kaon potentials based on effective chiral models. The information on the in-medium $K^+$ potential extracted from kaon flow is consistent with the knowledge from other sources.

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