| Autor(es): |
Garcilazo, H.
;
Valcarce, A.
;
Vijande, J.
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | REVISTA MEXICANA DE FISICA; v. 63, n. 5, p. 12-pg., 2017-09-01. |
| Resumo | |
We review our recent work about the stability of strange few-body systems containing N's, Lambda's, and Xi's. We make use of local central Yukawa-type Malfliet-Tjon interactions reproducing the low-energy parameters and phase shifts of the nucleon-nucleon system and the latest updates of the hyperon-nucleon and hyperon-hyperon ESCO8c Nijmegen potentials. We solve the three-and four-body bound-state problems by means of Faddeev equations and a generalized Gaussian variational method, respectively. The hypertriton, Lambda np(I)J(P) = (1/2)1/2(+), is bound by 144 keV; the recently discussed Lambda nn (I)J(P) = (1/2)1/2(+) system is unbound, as well as the Lambda Lambda nn (I)J(P) = (1)0(+) system, being just above threshold. Our results indicate that the Xi NN, Xi Xi N and Xi Xi NN systems with maximal isospin might be bound. (AU) | |
| Processo FAPESP: | 15/50326-5 - Charmed hadron physics |
| Beneficiário: | Gastão Inácio Krein |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |