Imaging Freeze-out Sources and Extracting Strong Interaction Parameters in Relativistic Heavy-Ion Collisions
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866912249252151296 |
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| author | Xu, Junhuai Qin, Zhi Zou, Renjie Si, Dawei Xiao, Sheng Tian, Baiting Wang, Yijie Xiao, Zhigang |
| author_facet | Xu, Junhuai Qin, Zhi Zou, Renjie Si, Dawei Xiao, Sheng Tian, Baiting Wang, Yijie Xiao, Zhigang |
| contents | By combining femtoscopic interferometry with an optical deblurring algorithm, we present a novel method to image the source in heavy-ion collisions (HICs) while simultaneously determining the interaction strength between particle pairs. The spatial distribution of the emission source has been reconstructed for protons ($p$) and antiprotons ($\bar{p}$) from the respective $pp$ and $\bar{p}\bar{p}$ correlation functions in Au+Au collisions at $\sqrt{S_{\rm NN}}=200$ GeV. Within experimental uncertainties, protons and antiprotons share the same freeze-out distribution showing higher density in the center compared to the widely assumed Gaussian shape. The results evidence the matter-antimatter symmetry in coordinate space at the moment of freeze-out before the nucleons are fully randomized in the collisions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_08718 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Imaging Freeze-out Sources and Extracting Strong Interaction Parameters in Relativistic Heavy-Ion Collisions Xu, Junhuai Qin, Zhi Zou, Renjie Si, Dawei Xiao, Sheng Tian, Baiting Wang, Yijie Xiao, Zhigang Nuclear Theory Nuclear Experiment By combining femtoscopic interferometry with an optical deblurring algorithm, we present a novel method to image the source in heavy-ion collisions (HICs) while simultaneously determining the interaction strength between particle pairs. The spatial distribution of the emission source has been reconstructed for protons ($p$) and antiprotons ($\bar{p}$) from the respective $pp$ and $\bar{p}\bar{p}$ correlation functions in Au+Au collisions at $\sqrt{S_{\rm NN}}=200$ GeV. Within experimental uncertainties, protons and antiprotons share the same freeze-out distribution showing higher density in the center compared to the widely assumed Gaussian shape. The results evidence the matter-antimatter symmetry in coordinate space at the moment of freeze-out before the nucleons are fully randomized in the collisions. |
| title | Imaging Freeze-out Sources and Extracting Strong Interaction Parameters in Relativistic Heavy-Ion Collisions |
| topic | Nuclear Theory Nuclear Experiment |
| url | https://arxiv.org/abs/2411.08718 |