Scaling Properties of light (anti)nuclei and (anti)hypertriton production in Au+Au collisions at $\sqrt{s_{\rm{NN}}} = 200$ GeV
Scaling Properties of light (anti)nuclei and (anti)hypertriton production in Au+Au collisions at $\sqrt{s_{\rm{NN}}} = 200$ GeV
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DOI：
10.1088/0954-3899/41/11/115102
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发表时间：
2014-01
期刊：
影响因子：
--
通讯作者：
Chen Gang;Chen Huan;Wan Jiang-ling;Chen Zheng-Yu
中科院分区：
文献类型：
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作者：
Chen Gang;Chen Huan;Wan Jiang-ling;Chen Zheng-Yu
本文基于PACIAE + DCPC模型，研究了$\sqrt {s_{NN}}=200$ GeV中速Au + Au碰撞产生轻（反）核质量数的标度特性。结果表明，光（反）核的积分产率随质量数的增加呈指数下降，而质量数的增加取决于质量数的中心性，系统的这一性质可以用温度$T$来定量描述，模型结果与STAR数据一致。此外，我们还发现，从外围到中心碰撞，每个参与核子的重核（反核）的综合产率比$d(\bar{d})$更快地增加，这表明在相对论性重离子碰撞中出现了轻核（反核）产生的质量规模。
We present the scaling properties of mass number of light (anti)nuclei production in midrapidity Au + Au collisions at $\sqrt {s_{NN}}=200$ GeV based on the PACIAE + DCPC model. It is found that the integrated yield of light (anti)nuclei decreased exponentially with the increase of mass numbers which depends on the centrality, this properties of the system can be described quantitatively by temperature $T$ at hadronic freeze-out, and the model results are consistent with STAR data. Furthermore, we found that the integrated yield of heavier (anti)nuclei per participant nucleon increases from peripheral to central collisions more rapidly than that of $d(\bar{d})$, indicating that the mass scale of light (anti)nuclei production was presented in relativistic heavy ion collisions.