核旁观物质多重碎裂中超核的产生
Production of hypernuclei in multifragmentation of nuclear spectator matter
摘要：
在相对论重离子的周边碰撞中，可以产生含有λ超子的高激发旁观者。这种奇怪的旁观者物质可能会分裂成许多碎片（多重碎裂），这在普通的核系统中已经很好地建立了。我们推广的统计多重碎裂模型，以前成功地用于实验数据的描述，超核系统的情况下。我们预测了超核的相对产额和这种分裂的主要特征。我们指出这种现象与超物质中的液-气相变之间的联系。
英文摘要：
In peripheral collisions of relativistic heavy ions highly excited spectators containing Lambda-hyperons can be produced. Such strange spectator matter may undergo a break-up into many fragments (multifragmentation) as it is well established for ordinary nuclear systems. We generalize the statistical multifragmentation model, previously successfully used for the description of experimental data, for the case of hypernuclear systems. We predict relative yields of hypernuclei and the main characteristics of such a break-up. We point at a connection of this phenomenon with a liquid-gas phase transition in hypermatter.
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