Precision extraction of the deuteron electric polarizability via the Baldin sum rule with full low-energy coverage
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866914510118322176 |
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| author | Hao, Zi-Rui Fan, Gong-Tao Sun, Qian-Kun Wang, Hong-Wei Xu, Hang-Hua Liu, Long-Xiang Zhang, Yue Chen, Jiunn-Wei Yang, Yu-Xuan Jin, Sheng Chen, Kai-Jie Wang, Zhen-Wei Wang, Xiang-Fei Xu, Meng-Ke Li, Zhi-Cai Jiao, Pu Zhou, Meng-Die Ye, Shan Shen, Yu-Long Chen, Yin-Ji Zhang, Hao He, Jian-Jun Shen, Wen-Qing Ma, Yu-Gang |
| author_facet | Hao, Zi-Rui Fan, Gong-Tao Sun, Qian-Kun Wang, Hong-Wei Xu, Hang-Hua Liu, Long-Xiang Zhang, Yue Chen, Jiunn-Wei Yang, Yu-Xuan Jin, Sheng Chen, Kai-Jie Wang, Zhen-Wei Wang, Xiang-Fei Xu, Meng-Ke Li, Zhi-Cai Jiao, Pu Zhou, Meng-Die Ye, Shan Shen, Yu-Long Chen, Yin-Ji Zhang, Hao He, Jian-Jun Shen, Wen-Qing Ma, Yu-Gang |
| contents | The photodisintegration cross sections of the deuteron have been systematically measured over the photon energy range of 2.33-19.65 MeV at the Shanghai Laser Electron Gamma Source (SLEGS). By applying the well-established Baldin sum rule to the newly obtained data, the sum of the electric and magnetic dipole polarizabilities of the deuteron is extracted for the first time based solely on a dense and continuous experimental dataset, yielding αE +\{beta}M = 0.719\pm0.009stat\pm0.014algo\pm0.023syst fm3 . With theoretical values of the magnetic polarizability \{beta}M calculated from the pionless effective field theory, a new value of the electric polarizability is obtained as αE = 0.637 \pm 0.009stat \pm 0.014algo \pm 0.023syst \pm 0.004theo fm3 , which is in excellent agreement with current theoretical predictions. This result resolves the previous discrepancy between experimental measurements from elastic scattering and theory, providing a high-precision benchmark for nuclear interaction models. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_24220 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Precision extraction of the deuteron electric polarizability via the Baldin sum rule with full low-energy coverage Hao, Zi-Rui Fan, Gong-Tao Sun, Qian-Kun Wang, Hong-Wei Xu, Hang-Hua Liu, Long-Xiang Zhang, Yue Chen, Jiunn-Wei Yang, Yu-Xuan Jin, Sheng Chen, Kai-Jie Wang, Zhen-Wei Wang, Xiang-Fei Xu, Meng-Ke Li, Zhi-Cai Jiao, Pu Zhou, Meng-Die Ye, Shan Shen, Yu-Long Chen, Yin-Ji Zhang, Hao He, Jian-Jun Shen, Wen-Qing Ma, Yu-Gang Nuclear Experiment The photodisintegration cross sections of the deuteron have been systematically measured over the photon energy range of 2.33-19.65 MeV at the Shanghai Laser Electron Gamma Source (SLEGS). By applying the well-established Baldin sum rule to the newly obtained data, the sum of the electric and magnetic dipole polarizabilities of the deuteron is extracted for the first time based solely on a dense and continuous experimental dataset, yielding αE +\{beta}M = 0.719\pm0.009stat\pm0.014algo\pm0.023syst fm3 . With theoretical values of the magnetic polarizability \{beta}M calculated from the pionless effective field theory, a new value of the electric polarizability is obtained as αE = 0.637 \pm 0.009stat \pm 0.014algo \pm 0.023syst \pm 0.004theo fm3 , which is in excellent agreement with current theoretical predictions. This result resolves the previous discrepancy between experimental measurements from elastic scattering and theory, providing a high-precision benchmark for nuclear interaction models. |
| title | Precision extraction of the deuteron electric polarizability via the Baldin sum rule with full low-energy coverage |
| topic | Nuclear Experiment |
| url | https://arxiv.org/abs/2604.24220 |