Probing the neutron-skin thickness via the double-charge exchange reactions in pion-nucleus collisions
Fuente:
arXiv
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866909601284227072 |
|---|---|
| author | Zhang, Ban Feng, Zhao-Qing |
| author_facet | Zhang, Ban Feng, Zhao-Qing |
| contents | Within the framework of Lanzhou quantum molecular dynamics (LQMD) transport model, we investigate the influence of the neutron-skin thickness of neutron-rich nuclei on the pion emission in the double-charge exchange reactions near the $\triangle$-resonance energy, in particular, the rapidity and transverse momentum spectra, charged pion ratios et al. The reactions induced by pions are associated with the multiple processes of pions, nucleons and $\triangle$-resonances, correlated with the neutron-skin thickness. It is found that the kinetic energy spectra of $π^{-}$/$π^{+}$ ratio are sensitive to the neutron-skin thickness of neutron-rich nuclei for extracting the subsaturation-density symmetry energy. The double-charge exchange reactions are influenced by the neutron-skin thickness, in-medium properties of resonances, pion-nucleon potential and pion-nucleon scattering. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_02341 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Probing the neutron-skin thickness via the double-charge exchange reactions in pion-nucleus collisions Zhang, Ban Feng, Zhao-Qing Nuclear Theory Within the framework of Lanzhou quantum molecular dynamics (LQMD) transport model, we investigate the influence of the neutron-skin thickness of neutron-rich nuclei on the pion emission in the double-charge exchange reactions near the $\triangle$-resonance energy, in particular, the rapidity and transverse momentum spectra, charged pion ratios et al. The reactions induced by pions are associated with the multiple processes of pions, nucleons and $\triangle$-resonances, correlated with the neutron-skin thickness. It is found that the kinetic energy spectra of $π^{-}$/$π^{+}$ ratio are sensitive to the neutron-skin thickness of neutron-rich nuclei for extracting the subsaturation-density symmetry energy. The double-charge exchange reactions are influenced by the neutron-skin thickness, in-medium properties of resonances, pion-nucleon potential and pion-nucleon scattering. |
| title | Probing the neutron-skin thickness via the double-charge exchange reactions in pion-nucleus collisions |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2505.02341 |