Production of spectator hypermatter in relativistic heavy-ion collisions

Details Production of spectator hypermatter in relativistic heavy-ion collisions Production of spectator hypermatter in relativistic heavy-ion collisions

2011-05-06

arxiv.org/abs/1105.1341v1

Physics

Nuclear Physics

Nuclear Theory

28 pages, including 10 figures. Submitted to Phys. Rev. C

Scientific paper

We study the formation of large hyper-fragments in relativistic heavy-ion collisions within two transport models, DCM and UrQMD. Our goal is to explore a new mechanism for the formation of strange nuclear systems via capture of hyperons by relatively cold spectator matter produced in semi-peripheral collisions. We investigate basic characteristics of the produced hyper-spectators and evaluate the production probabilities of multi-strange systems. Advantages of the proposed mechanisms over an alternative coalescence mechanism are analysed. We also discuss how such systems can be detected taking into account the background of free hyperons. This investigation is important for the development of new experimental methods for producing hyper-nuclei in peripheral relativistic nucleus-nucleus collisions, which are now underway at GSI and are planned for the future FAIR and NICA facilities.

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