In-medium nucleon-nucleon cross sections from relativistic ab initio calculations
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866911366956187648 |
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| author | Wang, Tianyu Tong, Hui Wang, Chencan Qu, Xiaoying Wang, Sibo |
| author_facet | Wang, Tianyu Tong, Hui Wang, Chencan Qu, Xiaoying Wang, Sibo |
| contents | The in-medium nucleon-nucleon scattering cross section is a pivotal quantity for studying the medium effects of strong interaction, and its precise knowledge is critical for understanding the equation of state for dense matter, intermediate-energy heavy-ion collision dynamics, and related phenomena. In this work, we perform a microscopic investigation of in-medium nucleon-nucleon scattering cross sections, by utilizing the relativistic Brueckner-Hartree-Fock (RBHF) theory with the Bonn potential. The fully incorporation of both positive- and negative-energy states in the RBHF solutions allows us to determine the single-particle potentials, the effective G matrix, and the scattering cross section uniquely. The momentum, density, and isospin dependence of the cross section for pp, nn, and np scattering are studied in detail. Our results provide a solid foundation for future parametrization studies of multiparameter dependency of total scattering cross sections. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_18103 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | In-medium nucleon-nucleon cross sections from relativistic ab initio calculations Wang, Tianyu Tong, Hui Wang, Chencan Qu, Xiaoying Wang, Sibo Nuclear Theory The in-medium nucleon-nucleon scattering cross section is a pivotal quantity for studying the medium effects of strong interaction, and its precise knowledge is critical for understanding the equation of state for dense matter, intermediate-energy heavy-ion collision dynamics, and related phenomena. In this work, we perform a microscopic investigation of in-medium nucleon-nucleon scattering cross sections, by utilizing the relativistic Brueckner-Hartree-Fock (RBHF) theory with the Bonn potential. The fully incorporation of both positive- and negative-energy states in the RBHF solutions allows us to determine the single-particle potentials, the effective G matrix, and the scattering cross section uniquely. The momentum, density, and isospin dependence of the cross section for pp, nn, and np scattering are studied in detail. Our results provide a solid foundation for future parametrization studies of multiparameter dependency of total scattering cross sections. |
| title | In-medium nucleon-nucleon cross sections from relativistic ab initio calculations |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2503.18103 |