Speaker
Description
Recent advances in beam technologies have enabled the application of weakly and electromagnetically interacting probes [1]. As these applications expand, an accurate understanding of nuclear reactions induced by muon capture and photo-nuclear processes becomes increasingly important, particularly in relation to radiation protection and the production of secondary radioactive isotopes. In particular, particle emissions following such reactions are highly relevant for both fundamental nuclear physics and practical applications.
To construct a reliable database for weak and electromagnetic nuclear reactions, both new experimental data and advanced theoretical models are required. Our recent work has demonstrated that couplings to higher-order configurations, such as two-particle–two-hole (2p–2h) states, are crucial for describing particle emission spectra from muon capture on 28Si. These studies were carried out using fully microscopic approaches based on Skyrme–Hartree–Fock combined with the second random-phase approximation and the second Tamm–Dancoff approximation [2–5].
We have also shown that contributions from pre-equilibrium processes and meson-exchange currents, described within the exciton-model framework [6], are essential for reproducing experimental observables. This theoretical framework was successfully extended to describe muon capture on 40Ca as well. Encouraged by these results, we are now systematically investigating muon- and neutrino-induced reactions across the nuclear chart.
In this work, we present our latest physical insights into these reactions and discuss progress toward the construction of a consistent nuclear data set for weak and electromagnetic probes.
[1] M. Niikura, S. Abe, S. Kawase, T. Matsuzaki, F. Minato, et al., arXiv:2403.19965 (2024).
[2] F. Minato, arXiv:2512.19961 (2025).
[3] F. Minato, T. Naito, O. Iwamoto, Phys. Rev. C107, 054314 (2023).
[4] R. Mizuno et al., Phys. Rev. C 112, 024307; Phys. Rev. C 112, 054305 (2025)
[5] S. Kawase et al., arXiv:2601.09106 (2026).
[6] O. Iwamoto, N. Iwamoto, S. Kunieda, F. Minato, K. Shibata, Nucl. Data Sheets 131, 259 (2016).
| Contribution category | Theory |
|---|---|
| Presenter status | Faculty/Staff |