Chiral symmetry and peripheral neutron-$α$ scattering
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866912669337911296 |
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| author | Yang, Yilong Epelbaum, Evgeny Meng, Jie Meng, Lu Zhao, Pengwei |
| author_facet | Yang, Yilong Epelbaum, Evgeny Meng, Jie Meng, Lu Zhao, Pengwei |
| contents | We propose and demonstrate that peripheral neutron-$α$ scattering at low energies can serve as a sensitive and clean probe of the long-range three-nucleon forces. To this aim, we perform {\it ab initio} quantum Monte Carlo calculations using two- and three-nucleon interactions derived in chiral effective field theory up to third expansion order. We show that the longest-range three-nucleon force stemming from the two-pion exchange plays a crucial role in the proper description of the neutron-$α$ $D$-wave phase shifts. Our Letter reveals the predictive power of chiral symmetry in the few-body sector and opens a new direction for probing and constraining three-nucleon forces. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_09961 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Chiral symmetry and peripheral neutron-$α$ scattering Yang, Yilong Epelbaum, Evgeny Meng, Jie Meng, Lu Zhao, Pengwei Nuclear Theory We propose and demonstrate that peripheral neutron-$α$ scattering at low energies can serve as a sensitive and clean probe of the long-range three-nucleon forces. To this aim, we perform {\it ab initio} quantum Monte Carlo calculations using two- and three-nucleon interactions derived in chiral effective field theory up to third expansion order. We show that the longest-range three-nucleon force stemming from the two-pion exchange plays a crucial role in the proper description of the neutron-$α$ $D$-wave phase shifts. Our Letter reveals the predictive power of chiral symmetry in the few-body sector and opens a new direction for probing and constraining three-nucleon forces. |
| title | Chiral symmetry and peripheral neutron-$α$ scattering |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2502.09961 |