Ar+Sc系统中基于粒子对源与基于关联函数的Lévy分析在SPS能量下的比较
Comparison of pair-source and correlation-function based Lévy analyses in Ar+Sc system at SPS energies
- ELTE Eötvös Loránd University（布达佩斯罗兰大学）
- HUN-REN Wigner Research Centre for Physics（匈牙利科学院维格纳物理研究中心）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
本研究利用UrQMD模拟在中心Ar+Sc碰撞中，基于Lévy稳定源分布进行三维π源分析，并比较了从粒子对源投影与关联函数提取的参数，为NA61/SHINE飞秒学提供强子基线。
AI中文摘要：
在高能碰撞中，飞秒观测量的非高斯特征已被观察到，但其起源尚未完全理解。本研究聚焦于飞秒学的唯象方法，通过利用Lévy稳定源分布超越高斯近似。使用UrQMD模拟，在中心Ar+Sc碰撞中进行了三维π介子源分析，并将提取的参数作为横质量和碰撞能量的函数进行研究。该分析为NA61/SHINE实验中过去和未来的飞秒学研究提供了强子基线。本文直接比较了从三维粒子对源分布的投影中提取的参数与通过快速傅里叶变换重建的三维关联函数所获得的参数，进行了方法论上的对比。
英文摘要：
Non-Gaussian features in femtoscopic observables have been observed in high-energy collisions, yet their origin remains not fully understood. This study focuses on the phenomenological approach to femtoscopy, going beyond the Gaussian approximation by utilizing Lévy-stable source distributions. Using UrQMD simulations, three-dimensional analyses of pion sources are done in central Ar+Sc collisions, and the extracted parameters are studied as functions of transverse mass and collision energy. This analysis contributes to a hadronic baseline motivated by past and future research work in femtoscopy at the NA61/SHINE experiment. A direct methodological comparison is presented between parameters extracted from the projections of three-dimensional pair-source distribution and those obtained from the three-dimensional correlation function, reconstructed via Fast Fourier Transform.
