| Texto completo | |
| Autor(es): |
Higa, Renato
;
Premarathna, Pradeepa
;
Rupak, Gautam
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW C; v. 106, n. 1, p. 20-pg., 2022-07-05. |
| Resumo | |
The E1 and M1 contributions to Be-7(p, gamma)B-8 at low energies are calculated in halo effective field theory. The excited Be-7(*) core is included as an explicit degree of freedom in a coupled-channels calculation. The E1 transition is calculated up to next-to-next-to-leading order. The leading contribution from M1 transition that gives significant contribution in a narrow energy region around the 1(+) resonance state of B-8 is included. We compare our results with previous halo effective field theory calculations that also included the Be-7(*) as an explicit degree of freedom. We disagree with these previous calculations in both the formal expressions and also in the analysis. Bayesian inference of the data gives S-17(0) = 21.0(7) eV b when combined with the expected theory error. (AU) | |
| Processo FAPESP: | 19/07767-1 - Reações nucleares com núcleos fracamente ligados ou com estrutura de cluster, radioativos e estáveis |
| Beneficiário: | Leandro Romero Gasques |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 17/05660-0 - Estudos teóricos da estrutura e reações de núcleos exóticos e sistemas de muitos corpos |
| Beneficiário: | Brett Vern Carlson |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |