用序列链模型（SCM）分析不同RHIC相互作用中的$j/Ψ$产生
Analysing $j/Ψ$ Production in Various RHIC Interactions with a Version of Sequential Chain Model (SCM)
摘要：
本文尝试建立一个RHIC能区p+p，d+Au，Cu + Cu和Au + Au碰撞中产生$J/Ψ$的模型，其基本假设是核-核碰撞的结果可以由核子-核子（p + p）相互作用得到，并引入高能核碰撞的一些附加特征。基于我们所提出的新模型，我们试图（i）捕捉$J/Ψ$介子产生的不变$p_T$ -谱的性质，（ii）研究$p_T$ -谱的中心依赖性质，（iii）理解快度分布，（iv）研究$p_T$ -谱的中心依赖性质。（iv）求出平均横动量$< p_T >$的特性和$< p_T^2 >$的值;（v）追踪核修饰因子的性质。这里采用的另一种方法以相当令人满意的方式描述了关于上述各种观测数据的数据集。最后，$J/Ψ$的性质-生产在大型强子对撞机（LHC）-我们选择的模型的基础上推导出的能量已经提出了一个预测的方式对RHIC产量，计算的最中心的碰撞和相同的模型。
英文摘要：
We have attempted to develop here tentatively a model for $J/Ψ$ production in p+p, d+Au, Cu + Cu and Au + Au collisions at RHIC energies on the basic ansatz that the results of nucleus-nucleus collisions could be arrived at from the nucleon-nucleon (p + p)-interactions with induction of some additional specific features of high energy nuclear collisions. Based on the proposed new and somewhat unfamiliar model, we have tried (i) to capture the properties of invariant $p_T$ -spectra for $J/Ψ$ meson production; (ii) to study the nature of centrality dependence of the $p_T$ -spectra; (iii) to understand the rapidity distributions; (iv) to obtain the characteristics of the average transverse momentum $< p_T >$ and the values of $< p_T^2 >$ as well and (v) to trace the nature of nuclear modification factor. The alternative approach adopted here describes the data-sets on the above-mentioned various observables in a fairly satisfactory manner. And, finally, the nature of $J/Ψ$-production at Large Hadron Collider(LHC)-energies deduced on the basis of our chosen model has been presented in a predictive way against the RHIC-yields, both calculated for the most central collisions and on the same model.
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