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arXiv 2510.20554nucl-exnucl-th
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探测重离子碰撞中三维发射源与中子皮的π-π相关性

Probing the Three-dimension Emission Source and Neutron Skin via $π$-$π$ Correlations in Heavy-Ion Collisions

Tsinghua University(清华大学);Huzhou University(湖州大学)

Haojie Zhang, Junhuai Xu, Pengcheng Li, Zhi Qin, Dawei Si, Yijie Wang, Yongjia Wang, Qingfeng Li, Zhigang Xiao

AI总结:

通过Richardson-Lucy算法重构重离子碰撞中π-π相关性,探测三维源函数和中子皮厚度分布。

摘要:

Richardson-Lucy算法被应用于从π-π相关函数重建相同π子的三维源函数。首先通过高斯型初始源函数的模拟评估该算法的性能。进一步利用Au+Au碰撞在1.23 A GeV时的实验数据,由HADES合作组收集,证明了其成像质量和鲁棒性。此外,利用UrQMD模拟Pb+Pb碰撞在1.5 A GeV时的数据,我们显示去模糊的源函数对碰撞核的初始中子皮厚度表现出敏感性。这突显了Richardson-Lucy算法作为探测重核中子密度分布工具的潜力。

英文摘要:

The Richardson-Lucy algorithm is applied to reconstruct the three-dimensional source function of identical pions from their two-particle correlation functions. The algorithm's performance is first evaluated through simulations with Gaussian-type initial source functions. Its imaging quality and robustness are further demonstrated with experimental data from Au+Au collisions at 1.23 A GeV, collected by the HADES Collaboration. Additionally, using UrQMD simulations of Pb+Pb collisions at 1.5 A GeV, we show that the deblurred source functions exhibit sensitivity to the initial neutron skin thickness of the colliding nuclei. This highlights the potential of the Richardson-Lucy algorithm as a tool for probing the neutron density distribution in heavy nuclei.

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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