SS-HORSE extension of the no-core shell model: Application to resonances in 7He

Авторы: Mazur I.A., Shin I.J., Kim Y., Mazur A.I., Shirokov A.M., Maris P., Vary J.P.
Журнал: Physical Review C
Том: 106
Номер: 6
Год издания: 2022
Издательство: American Physical Society
Местоположение издательства: College Park, MD
Первая страница: 064320-1
Последняя страница: 064320-10
DOI: 10.1103/physrevc.106.064320
Аннотация: Theoretical ab initio studies of resonances in the unbound 7He nucleus are presented. We perform no-core shell-model calculations with NN interactions Daejeon16 and JISP16 and utilize the SS-HORSE method to calculate the S matrix for two-body channels n + 6He and n + 6He∗ with 6He respectively in the ground and excited 2+ states as well as for the four-body democratic decay channel 4He + n + n + n. The resonant energies and widths are obtained by numerical location of the S-matrix poles. We describe all experimentally known 7He resonances and suggest an interpretation of an observed wide resonance of unknown spin-parity.
Добавил в систему: Широков Андрей Михайлович

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