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Origin of subthreshold K^+ production in heavy ion collisions | | C. Fuchs
; Z. Wang
; L. Sehn
; Amand Faessler
; V.S. Uma Maheswari
; D.S. Kosov
; | | Date: |
30 Dec 1996 | | Journal: | Phys.Rev. C56 (1997) 606-609 | | Subject: | nucl-th | | Abstract: | We investigate the origin of subthreshold $K^+$ production in heavy ion collisions at intermediate energies. In particular we study the influence of the pion induced $K^+$ creation processes. We find that this channel shows a strong dependence on the size of the system, i.e., the number of participating nucleons as well as on the incident energy of the reaction. In an energy region between 1--2 GeV/nucleon the pion induced processes essentially contribute to the total yield and can even become dominant in reactions with a large number of participating nucleons. Thus we are able to reproduce recent measurements of the KaoS Collaboration for 1 GeV/nucleon Au on Au reactions adopting a realistic momentum dependent nuclear mean field. | | Source: | arXiv, nucl-th/9701065 | | Services: | Forum | Review | PDF | Favorites | |
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