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arXiv 2510.03079nucl-thhep-ph
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LHC能区O+O和Ne+Ne碰撞中总带电粒子产额中心度依赖的修正Glauber模型预测

Predictions in modified Glauber model of total charged-particle yields centrality dependence in O+O and Ne+Ne collisions at LHC

Svetlana Simak, Grigory Feofilov

AI总结:

本研究利用含动量损失参数k的蒙特卡洛修正Glauber模型,预测LHC能区O+O和Ne+Ne碰撞总带电粒子产额的中心度依赖,模型基于Pb+Pb碰撞数据校准,结果可为QGP性质研究提供参考。

摘要:

本文介绍了将蒙特卡洛修正Glauber模型用于预测LHC能区¹⁶O+¹⁶O和²⁰Ne+²⁰Ne碰撞系统中总带电粒子产额的碰撞中心度依赖的结果。\n 我们的模型与标准Glauber模型的区别在于,它有效考虑了连续非弹性核子-核子碰撞中的能量损失。为此,我们定义了一个单一模型参数k,即任意二元核子碰撞中因产生多粒子而发生的动量损失的平均份额。因此,每次非弹性碰撞后核子动量的降低会导致后续相互作用中非弹性截面和平均多重数产额相应减少。所有这些效应都在MC模型的每一次后续非弹性二元相互作用中被纳入考虑。\n 我们讨论了这些轻碰撞系统的纯几何效应,这些效应可在未来通过能量密度扫描研究QGP性质的工作中发挥作用。该单参数模型的预测是基于此前ALICE实验在LHC上观测到的Pb+Pb碰撞中带电粒子产额的非线性中心度依赖的成功分析。

英文摘要:

In this article we present the results of application of the Monte Carlo modified Glauber model for the predictions of collision centrality dependence of the total charged-particle yields for 16O +16O and 20Ne+20Ne colliding systems at the LHC. Our model differs from the Standard Glauber model by the effective account of the energy losses in successive inelastic nucleon-nucleon collisions. For this purpose, a single model parameter k is defined as a mean fraction of the momentum loss that happens in any binary nucleon collision due to the production of multiple particles. Therefore, the decrease of the nucleon momentum after each inelastic collision leads to a corresponding reduction of the inelastic cross section and the mean multiplicity yield in the subsequent interaction. All these effects are taken into account in the MC model in each of the subsequent inelastic binary interactions. We discuss the purely geometrical effects for these light colliding systems that could be considered useful in future studies of QGP properties in energy density scanning. Predictions in this single parameter model are based on the previous successful analysis of non-linear centrality dependence of charged particle yields observed in Pb+Pb collisions by ALICE at the LHC.

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