Towards a microscopic description of nucleus-nucleus collisions
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866917186979758080 |
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| author | Vorabbi, Matteo Gennari, Michael Finelli, Paolo Giusti, Carlotta Navrátil, Petr |
| author_facet | Vorabbi, Matteo Gennari, Michael Finelli, Paolo Giusti, Carlotta Navrátil, Petr |
| contents | We present the first results of a comprehensive microscopic approach to describe nucleus-nucleus elastic collisions by means of an optical potential derived at first order in multiple-scattering theory and computed by folding the projectile and target nuclear densities with the nucleon-nucleon $t$ matrix, which describes the interaction between each nucleon of the projectile and each nucleon of the target. Chiral interactions are consistently used in the calculation of the $t$ matrix and of the nonlocal nuclear densities, which are computed within the ab initio no-core shell model. Cross sections calculated for $α$ collisions on $^{12}$C and $^{16}$O at projectile energies in the range 100-300 MeV are presented and compared with available data. For momentum transfer $q$ up to about $1.0$ fm$^{-1}$ our results are in good agreement with the experimental data, whereas for higher momenta a reduction of the imaginary contributions is needed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_15406 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Towards a microscopic description of nucleus-nucleus collisions Vorabbi, Matteo Gennari, Michael Finelli, Paolo Giusti, Carlotta Navrátil, Petr Nuclear Theory Nuclear Experiment We present the first results of a comprehensive microscopic approach to describe nucleus-nucleus elastic collisions by means of an optical potential derived at first order in multiple-scattering theory and computed by folding the projectile and target nuclear densities with the nucleon-nucleon $t$ matrix, which describes the interaction between each nucleon of the projectile and each nucleon of the target. Chiral interactions are consistently used in the calculation of the $t$ matrix and of the nonlocal nuclear densities, which are computed within the ab initio no-core shell model. Cross sections calculated for $α$ collisions on $^{12}$C and $^{16}$O at projectile energies in the range 100-300 MeV are presented and compared with available data. For momentum transfer $q$ up to about $1.0$ fm$^{-1}$ our results are in good agreement with the experimental data, whereas for higher momenta a reduction of the imaginary contributions is needed. |
| title | Towards a microscopic description of nucleus-nucleus collisions |
| topic | Nuclear Theory Nuclear Experiment |
| url | https://arxiv.org/abs/2506.15406 |