Probing the Three-dimension Emission Source and Neutron Skin via $π$-$π$ Correlations in Heavy-Ion Collisions
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arXiv
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| Auteurs principaux: | , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866910045622501376 |
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| author | Zhang, Haojie Xu, Junhuai Li, Pengcheng Qin, Zhi Si, Dawei Wang, Yijie Wang, Yongjia Li, Qingfeng Xiao, Zhigang |
| author_facet | Zhang, Haojie Xu, Junhuai Li, Pengcheng Qin, Zhi Si, Dawei Wang, Yijie Wang, Yongjia Li, Qingfeng Xiao, Zhigang |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_20554 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Probing the Three-dimension Emission Source and Neutron Skin via $π$-$π$ Correlations in Heavy-Ion Collisions Zhang, Haojie Xu, Junhuai Li, Pengcheng Qin, Zhi Si, Dawei Wang, Yijie Wang, Yongjia Li, Qingfeng Xiao, Zhigang Nuclear Experiment Nuclear Theory 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. |
| title | Probing the Three-dimension Emission Source and Neutron Skin via $π$-$π$ Correlations in Heavy-Ion Collisions |
| topic | Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2510.20554 |