通过高能同位素碰撞中的多粒子方位相关性解构核结构
Disentangling nuclear structure through multiparticle azimuthal correlations in high-energy isobar collisions
AI总结：
本研究利用多粒子方位相关性在高能同位素碰撞中分析核结构特征，揭示其对核变形和中子皮肤厚度的敏感性。
摘要：
事件对波动在流调和的幅度提供了一种新的方法来探测重离子碰撞的初始状态特性。在本研究中，我们利用多粒子累积量在96Ru+96Ru和96Zr+96Zr碰撞中系统地研究了各种流调和之间的相关性，其中碰撞能量为sqrt(sNN)=200 GeV，在多相传输模型框架内。特定于同位素系统的相关核密度分布被纳入以评估所选可观测性对核变形和中子皮肤厚度变化的敏感性。分析表明，多粒子方位相关性对这些核结构特征敏感，主要在最中央碰撞事件中。此外，所考察的相关性对假设的剪切粘度值有浅层依赖性。这些发现提供了一个定量评估多粒子流可观测性在同位素碰撞中区分核结构效应的程度，并为未来详细动力学研究和实验测量提供了有价值的指导。
英文摘要：
Event-by-event fluctuations in the amplitudes of flow harmonics offer a novel approach to probing the initial-state characteristics in heavy-ion collisions. In this study, we conduct a systematic investigation of correlations among various flow harmonics utilizing multiparticle cumulants in $^{96}$Ru+$^{96}$Ru and $^{96}$Zr+$^{96}$Zr collisions at $\sqrtsnn =$ 200 GeV within the framework of a multiphase transport model. Correlated nuclear density distributions specific to the isobar systems are incorporated to evaluate the sensitivity of selected observables to variations in nuclear deformation and neutron skin thickness. The analysis reveals that multiparticle azimuthal correlations are responsive to these nuclear structure features, predominantly in the most central collision events. Furthermore, the examined correlations exhibit shallow dependence on the assumed shear viscosity values. These findings provide a quantitative evaluation of the extent to which multiparticle flow observables can discern nuclear structure effects in isobar collisions and offer valuable guidance for future detailed dynamical investigations and experimental measurements.
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