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arXiv 1303.5280nucl-thnucl-ex
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相对论性重离子碰撞中前后向多重关联的叠加方法

Forward-backward multiplicity correlations in relativistic heavy-ion collisions in a superposition approach

Adam Olszewski, Wojciech Broniowski

摘要:

我们在叠加框架下分析了相对论性重离子碰撞中远距离前向快度区和后向快度区之间的多重关联,其中粒子产生是通过相关源的独立发射发生的。这在原则上允许推断信息的远距离的前向-后向相关的来源在碰撞的最早阶段,仅根据实验信息的统计特征观察到的粒子分布。我们的三个阶段的研究纳入了部分子生产的波动在早期阶段,中间流体动力学演化的影响,以及在冻结的颗粒生产的波动。我们调查的覆盖分布和流体力学的功能,以及中心依赖的结果的依赖。我们分析了来自STAR协作的现有数据。对LHC上Pb+Pb碰撞的前向-后向多重关联进行了预测。

英文摘要:

We analyze the multiplicity correlations between distant forward and backward rapidity regions in relativistic heavy-ion collisions in a superposition framework, where the particle production occurs through independent emission from correlated sources. This in principle allows for inferring information on the long-range forward-backward correlations of the sources in the earliest phase of the collision, based solely on the experimental information on the statistical features of the observed particle distributions. Our three-stage study incorporates the fluctuations of parton production in the early phase, the effect of intermediate hydrodynamic evolution, as well as fluctuations in the production of particles at freeze-out. We investigate the dependence of the results on the features of the overlaid distributions and hydrodynamics, as well as the centrality dependence. We analyze the existing data from the STAR Collaboration. Predictions for the forward-backward multiplicity correlations in Pb+Pb collisions to be analyzed at the LHC are also made.

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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