| Revista: | Revista mexicana de física |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000425933 |
| ISSN: | 0035-001X |
| Autores: | Garcilazo, Humberto1 Valcarce, A2 Vijande, Javier3 |
| Instituciones: | 1Instituto Politécnico Nacional, Ciudad de México. México 2Universidad de Salamanca, Salamanca. España 3Universidad de Valencia, Valencia. España |
| Año: | 2017 |
| Periodo: | Sep-Oct |
| Volumen: | 63 |
| Número: | 5 |
| País: | México |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico, teórico |
| Resumen en inglés | We review our recent work about the stability of strange few-body systems containing N’s, Λ’s, and Ξ’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 ESC08c 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, Λ n p ( I ) J P = ( 1 / 2 ) 1 / 2 +, is bound by 144 keV; the recently discussed Λ n n ( I ) J P = ( 1 / 2 ) 1 / 2 + system is unbound, as well as the Λ Λ n n ( I ) J P = ( 1 ) 0 + system, being just above threshold. Our results indicate that the Ξ N N, Ξ Ξ N and Ξ Ξ N N systems with maximal isospin might be bound |
| Disciplinas: | Física y astronomía |
| Palabras clave: | Física, Interacciones de Baryon-Baryon, Ecuaciones de Faddeev, Acercamientos variables |
| Keyword: | Physics, Baryon-Baryon interactions, Faddeev equations, Variational approaches |
| Texto completo: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
