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arXiv 2110.04784hep-phnucl-exnucl-th
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多相输运模型中前向-后向多重关联的系统演化

System evolution of forward-backward multiplicity correlations in a multi-phase transport model

Yi-An Li, Dong-Fang Wang, Song Zhang, Yu-Gang Ma

摘要:

利用多相输运模型(AMPT)研究了轻核碰撞中初始几何效应对前后多重关联$C(N_{f},N_{b})$的影响。结果表明,四面体$^{16}$ O + $^{16}$ O形成的火球更均匀、对称,膨胀演化后的最终粒子分布更各向同性,形成小的$C(N_{f},N_{b})$.前向-后向多重数关联可以作为一种有用的探针,在实验中通过比较邻近的碰撞核系统如$^{14}$ N + $^{14}$ N和$^{19}$ F + $^{19}$ F来区分$α$-簇合$^{16}$ O的模式.

英文摘要:

The initial geometry effect on forward-backward multiplicity correlations $C(N_{f},N_{b})$ is studied in relativistic collisions between light nuclei by using a multiphase transport model (AMPT). It is found that tetrahedron $^{16}$O + $^{16}$O gives a more uniform and symmetrical fireball which produces a more isotropic distribution of final particles after the expansion and evolution, and leads to a small $C(N_{f},N_{b})$. Forward-backward multiplicity correlation could be taken as a useful probe to distinguish the pattern of $α$-clustered $^{16}$O in experiments by comparing the neighboring colliding nuclear systems like $^{14}$N + $^{14}$N and $^{19}$F + $^{19}$F.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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