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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2505.18459 |
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| _version_ | 1866917250022244352 |
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| author | Tsaran, Viacheslav Marino, Francesco Bacca, Sonia Bonaiti, Francesca Vanderhaeghen, Marc |
| author_facet | Tsaran, Viacheslav Marino, Francesco Bacca, Sonia Bonaiti, Francesca Vanderhaeghen, Marc |
| contents | We extend the pion-nucleus multiple-scattering framework to include detailed second-order rescattering dynamics for nuclei with non-zero isospin. To account for intermediate charge-exchange and nucleon spin-flip effects, we develop a scattering potential that depends on the one- and two-body densities of the target nucleus. We compute one-body densities from coupled-cluster theory and two-body densities within the Hartree-Fock approximation. To estimate theoretical uncertainties, we employ modern nuclear Hamiltonians derived from chiral effective field theory. While the sensitivity to nuclear structure details is mild, second-order corrections are found to be sizeable and essential for accurately reproducing differential cross sections measured in $π^\pm$-${}^{48}$Ca elastic scattering within the $Δ(1232)$-resonance region |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_18459 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Bridging reaction theory and nuclear structure in $π^\pm$-${}^{48}$Ca scattering Tsaran, Viacheslav Marino, Francesco Bacca, Sonia Bonaiti, Francesca Vanderhaeghen, Marc Nuclear Theory High Energy Physics - Phenomenology We extend the pion-nucleus multiple-scattering framework to include detailed second-order rescattering dynamics for nuclei with non-zero isospin. To account for intermediate charge-exchange and nucleon spin-flip effects, we develop a scattering potential that depends on the one- and two-body densities of the target nucleus. We compute one-body densities from coupled-cluster theory and two-body densities within the Hartree-Fock approximation. To estimate theoretical uncertainties, we employ modern nuclear Hamiltonians derived from chiral effective field theory. While the sensitivity to nuclear structure details is mild, second-order corrections are found to be sizeable and essential for accurately reproducing differential cross sections measured in $π^\pm$-${}^{48}$Ca elastic scattering within the $Δ(1232)$-resonance region |
| title | Bridging reaction theory and nuclear structure in $π^\pm$-${}^{48}$Ca scattering |
| topic | Nuclear Theory High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2505.18459 |