Spin polarization from nucleon-nucleon scatterings in intermediate-energy heavy-ion collisions
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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866912464546824192 |
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| author | Liu, Rong-Jun Xu, Jun Ma, Yu-Gang |
| author_facet | Liu, Rong-Jun Xu, Jun Ma, Yu-Gang |
| contents | We propose a new mechanism of generating spin polarization in heavy-ion collisions dominated by nucleon degree of freedom. By incorporating the spin change in nucleon-nucleon scatterings based on the phase shift data together with the constraint of rigorous angular momentum conservation and Pauli blocking, we illustrate through a Boltzmann-Uehling-Uhlenbeck transport model that appreciable spin polarization (about $1 \sim 2\%$) can be generated in intermediate-energy heavy-ion collisions. This mechanism, together with the nuclear spin-orbit potential, may help to understand the spin polarization in few-GeV heavy-ion collisions dominated by nucleon degree of freedom. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_22247 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Spin polarization from nucleon-nucleon scatterings in intermediate-energy heavy-ion collisions Liu, Rong-Jun Xu, Jun Ma, Yu-Gang Nuclear Theory High Energy Physics - Experiment Nuclear Experiment We propose a new mechanism of generating spin polarization in heavy-ion collisions dominated by nucleon degree of freedom. By incorporating the spin change in nucleon-nucleon scatterings based on the phase shift data together with the constraint of rigorous angular momentum conservation and Pauli blocking, we illustrate through a Boltzmann-Uehling-Uhlenbeck transport model that appreciable spin polarization (about $1 \sim 2\%$) can be generated in intermediate-energy heavy-ion collisions. This mechanism, together with the nuclear spin-orbit potential, may help to understand the spin polarization in few-GeV heavy-ion collisions dominated by nucleon degree of freedom. |
| title | Spin polarization from nucleon-nucleon scatterings in intermediate-energy heavy-ion collisions |
| topic | Nuclear Theory High Energy Physics - Experiment Nuclear Experiment |
| url | https://arxiv.org/abs/2506.22247 |