超核在中高能重离子碰撞中的产生及其产生机制的研究

理论预言, 中高能重离子碰撞是产生超核、研究超核性质和提取超子-核子(YN)相互作用的有效途径。但到目前为止，由于缺乏此类的实验数据，超核在中高能重离子碰撞中的产额及其产生机制尚不明确。本课题在FOPI实验上的重离子碰撞实验数据中，即Ni+Ni@1.91 A GeV、Ru+Ru@1.7 A GeV和Ni+Pb@1.91 A GeV，提取可能的超核如3ΛH和4ΛH等的产额和相空间分布。在不同中心度条件下，通过比较实验数据和输运模型中相关粒子，即Λ超子和高能量π介子，在整个相空间的相对产额，来定性的研究超核在中高能重离子碰撞中的产生机制。

Intermediate-high energy heavy-ion collisions (IHE-HICs) were predicted to be an effective tool to produce the hypernuclei and to study their properties, as well as to extract the strength of hyperon-nucleon (YN) interactions. Hitherto, due to lacking of experimental data, it is still not well understood that the yields of the hypernuclei and their production mechanisms in IHE-HICs. In this proposal, it will be investigated that the yields and the phase space distribution of the possible hypernuclei, e.g. 3ΛH and 4ΛH, in the FOPI heavy-ion collision data, i.e. Ni+Ni@1.91 A GeV, Ru+Ru@1.7 A GeV and Ni+Pb@1.91 A GeV. Hypernuclei production mechanisms will be qualitatively studied by comparing the relative yields of associated particles, i.e. the Λ hyperon and the high energy π meson, in the full phase space under different centrality conditions.