Correlation between diffuseness and EMC effect of nuclei with A≤12
Correlation between diffuseness and EMC effect of nuclei with A≤12
Wang Yanzhao 1Zhang Wenhao 2Sun Yunyun 2Wang Hongmin 3Gao Yonghao 2Gu Jianzhong4
作者信息
- 1. Department of Mathematics and Physics, Shijiazhuang Tiedao University, Shijiazhuang 050043, China;Hebei Key Laboratory of Physics and Energy Technology, North China Electric Power University, Baoding 071000, China;China Institute of Atomic Energy, P. O. Box 275 (10), Beijing 102413, China;Hebei Research Center of the Basic Discipline Engineering Mechanics, Shijiazhuang Tiedao University, Shijiazhuang 050043, China;Institute of Applied Physics, Shijiazhuang Tiedao University, Shijiazhuang 050043, China
- 2. Department of Mathematics and Physics, Shijiazhuang Tiedao University, Shijiazhuang 050043, China;Institute of Applied Physics, Shijiazhuang Tiedao University, Shijiazhuang 050043, China;Hebei Research Center of the Basic Discipline Engineering Mechanics, Shijiazhuang Tiedao University, Shijiazhuang 050043, China
- 3. Physics Department, Army Academy of Armored Forces, PLA, Beijing 100072, China
- 4. China Institute of Atomic Energy, P. O. Box 275 (10), Beijing 102413, China
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摘要
Within the double \textit{Q}$^{2}$-rescaling model and the T. D. Lee's soliton bag model, by taking into account the local nucleon density distribution, the EMC effect of the nuclei with \textit{A}$\geq 12$ influenced by the nuclear diffuseness is explored. It is shown that the slope of EMC ratio for each nucleus is weakened with the increase of the diffuseness parameter. It implies that the weaker the surface binding in a nucleus, the less pronounced its EMC effect. Furthermore, we find that it is not enough to only adjust the diffusion parameter to reproduce the experimental EMC ratios and the corresponding slopes simultaneously, which indicates that other nuclear medium effects should be taken into account. Then, with the experimental EMC ratios, the relatively optimal diffusion parameter of each nucleus is determined. It is found that the determined diffusion parameter of each nucleus is larger than the commonly used value (0.54 fm) except for $^{12}$C. To test the accuracy of the determined diffusion parameters of these nuclei, the corresponding average binding energies are extracted. We find that the extracted binding energies of most nuclei are in good agreement with the corresponding experimental data. Finally, the correlation between the EMC effect of $^{208}$Pb and its neutron skin thickness is discussed briefly.
Abstract
Within the double \textit{Q}$^{2}$-rescaling model and the T. D. Lee's soliton bag model, by taking into account the local nucleon density distribution, the EMC effect of the nuclei with \textit{A}$\geq 12$ influenced by the nuclear diffuseness is explored. It is shown that the slope of EMC ratio for each nucleus is weakened with the increase of the diffuseness parameter. It implies that the weaker the surface binding in a nucleus, the less pronounced its EMC effect. Furthermore, we find that it is not enough to only adjust the diffusion parameter to reproduce the experimental EMC ratios and the corresponding slopes simultaneously, which indicates that other nuclear medium effects should be taken into account. Then, with the experimental EMC ratios, the relatively optimal diffusion parameter of each nucleus is determined. It is found that the determined diffusion parameter of each nucleus is larger than the commonly used value (0.54 fm) except for $^{12}$C. To test the accuracy of the determined diffusion parameters of these nuclei, the corresponding average binding energies are extracted. We find that the extracted binding energies of most nuclei are in good agreement with the corresponding experimental data. Finally, the correlation between the EMC effect of $^{208}$Pb and its neutron skin thickness is discussed briefly.关键词
EMC effect/diffusion parameter/double \textit{Q}$^{2}$-rescaling model/MIT bag model/T. D. Lee’s soliton bag modelKey words
EMC effect/diffusion parameter/double \textit{Q}$^{2}$-rescaling model/MIT bag model/T. D. Lee’s soliton bag model引用本文复制引用
Wang Yanzhao,Zhang Wenhao,Sun Yunyun,Wang Hongmin,Gao Yonghao,Gu Jianzhong.Correlation between diffuseness and EMC effect of nuclei with A≤12[EB/OL].(2026-05-12)[2026-05-15].https://chinaxiv.org/abs/202602.00204.学科分类
物理学
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