Investigating the possibility of extracting neutron-skin thickness in nuclei by their collisions at intermediate energies
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| Main Authors: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866929601755742208 |
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| author | Li, Tian-Ze Liu, Lu-Meng Xu, Jun Ren, Zhong-Zhou |
| author_facet | Li, Tian-Ze Liu, Lu-Meng Xu, Jun Ren, Zhong-Zhou |
| contents | Inspired by various studies on extracting the density distributions of nuclei from their collisions at ultrarelativistic energies, in the present work we investigate the possibility of extracting the neutron-skin thickness $Δr_{np}$ in nuclei by their collisions at intermediate energies. We have analyzed the free neutron-to-proton yield ratio $n/p$ as a candidate probe at both midrapidities and forward rapidities in peripheral and central $^{124}$Sn+$^{124}$Sn collisions based on an isospin-dependent Boltzmann-Uehling-Uhlenbeck (IBUU) transport model, and found that the resulting $n/p$ yield ratio is more sensitive to the symmetry potential in the collision dynamics than to the initial $Δr_{np}$ in colliding nuclei in most cases. The largest effect on the $n/p$ yield ratio from the initial $Δr_{np}$ is observed for nucleons at large transverse or longitudinal momenta in central collisions at the collision energy of a few GeV/nucleon. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_08337 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Investigating the possibility of extracting neutron-skin thickness in nuclei by their collisions at intermediate energies Li, Tian-Ze Liu, Lu-Meng Xu, Jun Ren, Zhong-Zhou Nuclear Theory Nuclear Experiment Inspired by various studies on extracting the density distributions of nuclei from their collisions at ultrarelativistic energies, in the present work we investigate the possibility of extracting the neutron-skin thickness $Δr_{np}$ in nuclei by their collisions at intermediate energies. We have analyzed the free neutron-to-proton yield ratio $n/p$ as a candidate probe at both midrapidities and forward rapidities in peripheral and central $^{124}$Sn+$^{124}$Sn collisions based on an isospin-dependent Boltzmann-Uehling-Uhlenbeck (IBUU) transport model, and found that the resulting $n/p$ yield ratio is more sensitive to the symmetry potential in the collision dynamics than to the initial $Δr_{np}$ in colliding nuclei in most cases. The largest effect on the $n/p$ yield ratio from the initial $Δr_{np}$ is observed for nucleons at large transverse or longitudinal momenta in central collisions at the collision energy of a few GeV/nucleon. |
| title | Investigating the possibility of extracting neutron-skin thickness in nuclei by their collisions at intermediate energies |
| topic | Nuclear Theory Nuclear Experiment |
| url | https://arxiv.org/abs/2411.08337 |