Production of hypernuclei in multifragmentation of nuclear spectator matter

摘要

In peripheral collisions of relativistic heavy ions highly excited spectatorscontaining Lambda-hyperons can be produced. Such strange spectator matter mayundergo a break-up into many fragments (multifragmentation) as it is wellestablished for ordinary nuclear systems. We generalize the statisticalmultifragmentation model, previously successfully used for the description ofexperimental data, for the case of hypernuclear systems. We predict relativeyields of hypernuclei and the main characteristics of such a break-up. We pointat a connection of this phenomenon with a liquid-gas phase transition inhypermatter.