标题： 相对论重离子碰撞中旁观者超物质的产生 显示英文标题

标题： Production of spectator hypermatter in relativistic heavy-ion collisions

摘要： 我们研究在相对论重离子碰撞中大超核的形成，使用两种输运模型，DCM和UrQMD。 我们的目标是探索一种新的机制，通过相对较冷的旁观物质捕获超子来形成奇异核系统。 我们研究产生的超旁观物质的基本特性，并评估多奇异系统的生成概率。 分析了所提出机制相对于另一种聚变机制的优势。 我们还讨论如何考虑到自由超子的背景来检测这些系统。 这项研究对于发展新的实验方法，在边缘相对论核-核碰撞中产生超核具有重要意义，目前在GSI正在进行，并计划在未来FAIR和NICA设施中进行。 显示英文摘要

摘要： 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.