Bremsstrahlung Gamma Ray as a Probe of Short-Range Correlations in Nuclei
he nucleons in nuclei form temporally correlated pairs in close proximity, called short range correlation (SRC), which plays a crucial role in understanding nuclear structure and the fundamental properties of dense nuclear matter. The consequence of SRC on heavy-ion collisions (HICs) has remained unexplored until now. In this paper, we identify neutron-proton bremsstrahlung -ray emission from HICs as a new indicator of SRC in nuclei. By observing the hardening of the bremsstrahlung -ray spectrum, which results from the increase of high-momentum components above the Fermi surface in nucleon momentum distributions, we precisely determine the SRC fraction in nuclei to be (217)% at 3 confidence levels. Our experiment identifies the first direct and accurate signature of SRC in low-energy HICs, providing a new method to study the parton momentum distribution of nucleons in nuclei.
Junhuai Xu、Qinglin Niu、Yuhao Qin、awei Si、Yijie Wang、Sheng Xiao、Baiting Tian、Zhi Qin、Haojie Zhang、Boyuan Zhang、ong Guo、Minxue Fu、Xiaobao Wei、Yibo Hao、Zengxiang Wang、ianren Zhuo、Yuansheng Yang、Xianglun Wei、Herun Yang、hunwang Ma、Peng Ma、Limin Duan、Fangfang Duan、Kang Wang、Junbing Ma、Shiwei Xu、Zhen Bai、Guo Yang、Yanyun Yang、Mengke Xu、Kaijie Chen、Zirui Hao、Gongtao Fan、Hongwei Wang、hang Xu、Zhigang Xiao
Department of Physics, Tsinghua University, Beijing 100084, ChinaSchool of Physics, Nanjing University, Nanjing 210093, ChinaDepartment of Physics, Tsinghua University, Beijing 100084, ChinaDepartment of Physics, Tsinghua University, Beijing 100084, ChinaDepartment of Physics, Tsinghua University, Beijing 100084, ChinaDepartment of Physics, Tsinghua University, Beijing 100084, ChinaDepartment of Physics, Tsinghua University, Beijing 100084, ChinaDepartment of Physics, Tsinghua University, Beijing 100084, ChinaDepartment of Physics, Tsinghua University, Beijing 100084, ChinaDepartment of Physics, Tsinghua University, Beijing 100084, ChinaDepartment of Physics, Tsinghua University, Beijing 100084, ChinaDepartment of Physics, Tsinghua University, Beijing 100084, ChinaInstitute of Particle and Nuclear Physics, Henan Normal University, Xinxiang 453007, ChinaInstitute of Particle and Nuclear Physics, Henan Normal University, Xinxiang 453007, ChinaInstitute of Particle and Nuclear Physics, Henan Normal University, Xinxiang 453007, ChinaInstitute of Particle and Nuclear Physics, Henan Normal University, Xinxiang 453007, ChinaInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaInstitute of Nuclear Science and Technology, Henan Academy of Sciences, Zhengzhou, 450015, China;Institute of Particle and Nuclear Physics, Henan Normal University, Xinxiang 453007, ChinaInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaShanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, ChinaShanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, ChinaShanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, ChinaShanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, ChinaShanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, ChinaSchool of Physics, Nanjing University, Nanjing 210093, ChinaCenter of High Energy Physics, Tsinghua University, Beijing 100084, China;Department of Physics, Tsinghua University, Beijing 100084, China
原子能技术基础理论粒子探测技术、辐射探测技术、核仪器仪表物理学
Short-range CorrelationsBremsstrahlung Gamma RaysHeavy Ion CollisionIBUU transport model
Short-range CorrelationsBremsstrahlung Gamma RaysHeavy Ion CollisionIBUU transport model
Junhuai Xu,Qinglin Niu,Yuhao Qin,awei Si,Yijie Wang,Sheng Xiao,Baiting Tian,Zhi Qin,Haojie Zhang,Boyuan Zhang,ong Guo,Minxue Fu,Xiaobao Wei,Yibo Hao,Zengxiang Wang,ianren Zhuo,Yuansheng Yang,Xianglun Wei,Herun Yang,hunwang Ma,Peng Ma,Limin Duan,Fangfang Duan,Kang Wang,Junbing Ma,Shiwei Xu,Zhen Bai,Guo Yang,Yanyun Yang,Mengke Xu,Kaijie Chen,Zirui Hao,Gongtao Fan,Hongwei Wang,hang Xu,Zhigang Xiao.Bremsstrahlung Gamma Ray as a Probe of Short-Range Correlations in Nuclei[EB/OL].(2025-04-20)[2025-06-19].https://chinaxiv.org/abs/202504.00252.点此复制
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