Cross-shell states in $^{15}$C: a test for p-sd interactions
Abstract
The low-lying structure of C has been investigated via the neutron-removal C reaction. Along with bound neutron sd-shell hole states, unbound p-shell hole states have been firmly confirmed. The excitation energies and the deduced spectroscopic factors of the cross-shell states are an important measure of the neutron configurations in C. Our results show a very good agreement with shell-model calculations using the SFO-tls interaction for C. However, a modification of the - and - monopole terms was applied in order to reproduce the isotone O. In addition, the excitation energies and spectroscopic factors have been compared to the first calculations of C with the self-consistent Green's function method employing the NNLO interaction. The results show the sensitivity to the size of the shell gap and highlight the need of going beyond the current truncation scheme in the theory.
Cite
@article{arxiv.2302.08382,
title = {Cross-shell states in $^{15}$C: a test for p-sd interactions},
author = {J. Lois-Fuentes and B. Fernández-Domínguez and X. Pereira-López and F. Delaunay and W. N. Catford and A. Matta and N. A. Orr and T. Duguet and T. Otsuka and V. Somà and O. Sorlin and T. Suzuki and N. L. Achouri and M. Assié and S. Bailey and B. Bastin and Y. Blumenfeld and R. Borcea and M. Caamaño and L. Caceres and E. Clément and A. Corsi and N. Curtis and Q. Deshayes and F. Farget and M. Fisichella and G. de France and S. Franchoo and M. Freer and J. Gibelin and A. Gillibert and G. F. Grinyer and F. Hammache and O. Kamalou and A. Knapton and Tz. Kokalova and V. Lapoux and B. Le Crom and S. Leblond and F. M. Marqués and P. Morfouace and J. Pancin and L. Perrot and J. Piot and E. Pollacco and D. Ramos and D. Regueira-Castro and C. Rodríguez-Tajes and T. Roger and F. Rotaru and M. Sénoville and N. de Séréville and R. Smith and M. Stanoiu and I. Stefan and C. Stodel and D. Suzuki and J. C. Thomas and N. Timofeyuk and M. Vandebrouck and J. Walshe and C. Wheldon},
journal= {arXiv preprint arXiv:2302.08382},
year = {2023}
}