论文标题
在$ \ sqrt {s _ {\ rm {nn}}} $ = 5.44 TEV使用AMPT模型中生成的电荷粒子的间歇性分析
Intermittency analysis of charged particles generated in Xe-Xe~collisions at $\sqrt{s_{\rm{NN}}}$ = 5.44 TeV using the AMPT model
论文作者
论文摘要
多重性波动对QCD相变和QCD相图中的临界点的存在敏感。在临界点，进行相变的系统的特征是可观察到的可观察到的波动很大，这是了解重离子相互作用和相变的粒子产生动力学的重要工具。产生的颗粒的多样性波动是表征不断发展的系统的重要观察。使用从二维（$η，ϕ $）相位空间中带电的Hadron的标准化阶乘数量获得的缩放指数，可以了解这些碰撞中创建的系统动力学。在$ \ sqrt {s _ {\ rm {nn}}}} = 5.44 $ tev的AMPT模型的$ \ sqrt {s _ {\ rm {nn}}} = 5.44 $ tev中生成的事件，分析了AMPT模型的string-melting（sm）版本，并确定了缩放指数$（n nn}}}。据观察，$ν$的计算值大于通用值1.304，如Ginzburg-Landau理论所获得的，用于二阶相变。在这里，我们还将介绍缩放指数对横向动量bin宽度的依赖性结果。
The multiplicity fluctuations are sensitive to QCD phase transition and to the presence of critical point in QCD phase diagram. At critical point a system undergoing phase transition is characterized by large fluctuations in the observables which is an important tool to understand the dynamics of particle production in heavy-ion interactions and phase changes. Multiplicity fluctuations of produced particles is an important observable to characterize the evolving system. Using scaling exponent obtained from the normalized factorial moments of the number of charged hadrons in the two dimensional ($η,ϕ$) phase space, one can learn about the dynamics of system created in these collisions. Events generated using Xe-Xe collisions at $\sqrt{s_{\rm{NN}}} = 5.44 $ TeV with string-melting (SM) version of the AMPT model are analyzed and the scaling exponent $(ν)$ for various $p_T$ intervals is determined. It is observed that the calculated value of $ν$ is larger than the universal value 1.304, as is obtained from Ginzburg-Landau theory for second order phase transition. Here we will also present the results of the dependence of the scaling exponent on the transverse momentum bin width.
