Precise Measurement of Short-Range Correlations in Nuclei from Bremsstrahlung Gamma Ray Emission in Low-Energy Heavy-Ion Collisions
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915623351615488 |
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| author | Xu, Junhuai Niu, Qinglin Qin, Yuhao Si, Dawei Wang, Yijie Xiao, Sheng Tian, Baiting Qin, Zhi Zhang, Haojie Zhang, Boyuan Guo, Dong Fu, Minxue Wei, Xiaobao Hao, Yibo Wang, Zengxiang Zhuo, Tianren Ma, Chunwang Yang, Yuansheng Wei, Xianglun Yang, Herun Ma, Peng Duan, Limin Duan, Fangfang Wang, Kang Ma, Junbing Xu, Shiwei Bai, Zhen Yang, Guo Yang, Yanyun Xu, Mengke Chen, Kaijie Hao, Zirui Fan, Gongtao Wang, Hongwei Xu, Chang Xiao, Zhigang |
| author_facet | Xu, Junhuai Niu, Qinglin Qin, Yuhao Si, Dawei Wang, Yijie Xiao, Sheng Tian, Baiting Qin, Zhi Zhang, Haojie Zhang, Boyuan Guo, Dong Fu, Minxue Wei, Xiaobao Hao, Yibo Wang, Zengxiang Zhuo, Tianren Ma, Chunwang Yang, Yuansheng Wei, Xianglun Yang, Herun Ma, Peng Duan, Limin Duan, Fangfang Wang, Kang Ma, Junbing Xu, Shiwei Bai, Zhen Yang, Guo Yang, Yanyun Xu, Mengke Chen, Kaijie Hao, Zirui Fan, Gongtao Wang, Hongwei Xu, Chang Xiao, Zhigang |
| contents | Atomic nuclei and dense nucleonic matter in neutron stars exhibit short-range correlations (SRCs), where nucleons form temporally correlated pairs in proximity beyond mean-field approximation. It is essential to make precision measurement of the fraction of SRC since it carries the signature of underlying quark dynamics in nuclear medium. In this letter, we present the first high-precision measurement of neutron-proton bremsstrahlung $γ$-ray emission from the symmetric $\rm ^{124}Sn$+$\rm ^{124}Sn$ reactions at 25 MeV/u. From the observed spectral hardening, the precise SRC fraction in the $\rm ^{124}Sn$ nucleus is extracted to be $(20 \pm 3)\%$. This result provides a novel, direct and unambiguous evidence of SRCs, and demonstrates that low-energy heavy-ion collisions offers a new approach to studying nuclear structure in connection with quark-level dynamics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_13929 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Precise Measurement of Short-Range Correlations in Nuclei from Bremsstrahlung Gamma Ray Emission in Low-Energy Heavy-Ion Collisions Xu, Junhuai Niu, Qinglin Qin, Yuhao Si, Dawei Wang, Yijie Xiao, Sheng Tian, Baiting Qin, Zhi Zhang, Haojie Zhang, Boyuan Guo, Dong Fu, Minxue Wei, Xiaobao Hao, Yibo Wang, Zengxiang Zhuo, Tianren Ma, Chunwang Yang, Yuansheng Wei, Xianglun Yang, Herun Ma, Peng Duan, Limin Duan, Fangfang Wang, Kang Ma, Junbing Xu, Shiwei Bai, Zhen Yang, Guo Yang, Yanyun Xu, Mengke Chen, Kaijie Hao, Zirui Fan, Gongtao Wang, Hongwei Xu, Chang Xiao, Zhigang Nuclear Experiment Nuclear Theory Atomic nuclei and dense nucleonic matter in neutron stars exhibit short-range correlations (SRCs), where nucleons form temporally correlated pairs in proximity beyond mean-field approximation. It is essential to make precision measurement of the fraction of SRC since it carries the signature of underlying quark dynamics in nuclear medium. In this letter, we present the first high-precision measurement of neutron-proton bremsstrahlung $γ$-ray emission from the symmetric $\rm ^{124}Sn$+$\rm ^{124}Sn$ reactions at 25 MeV/u. From the observed spectral hardening, the precise SRC fraction in the $\rm ^{124}Sn$ nucleus is extracted to be $(20 \pm 3)\%$. This result provides a novel, direct and unambiguous evidence of SRCs, and demonstrates that low-energy heavy-ion collisions offers a new approach to studying nuclear structure in connection with quark-level dynamics. |
| title | Precise Measurement of Short-Range Correlations in Nuclei from Bremsstrahlung Gamma Ray Emission in Low-Energy Heavy-Ion Collisions |
| topic | Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2504.13929 |