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Covariant kaon dynamics and kaon flow in heavy ion collisions | | Yu-Ming Zheng
; C. Fuchs
; Amand Faessler
; K. Shekhter
; Yu-Peng Yan
; Chinorat Kobdaj
; | | Date: |
27 Nov 2002 | | Journal: | Phys.Rev. C69 (2004) 034907 | | Subject: | nucl-th | | Abstract: | 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. | | Source: | arXiv, nucl-th/0211088 | | Services: | Forum | Review | PDF | Favorites | |
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