TY - JOUR
T1 - Stable bound states of N's, Λ's and Ξ's
AU - Garcilazo, H.
AU - Valcarce, A.
AU - Vijande, J.
PY - 2014
Y1 - 2014
N2 - 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, Λnp (I)JP = (1/2)1/2+, is bound by 144 keV; the recently discussed Λnn (I)JP = (1/2)1/2+ system is unbound, as well as the ΛΛnn (I)JP = (1)0+system, being just above threshold. Our results indicate that the ΞNN, ΞΞN and ΞΞNN systems with maximal isospin might be bound.
AB - 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, Λnp (I)JP = (1/2)1/2+, is bound by 144 keV; the recently discussed Λnn (I)JP = (1/2)1/2+ system is unbound, as well as the ΛΛnn (I)JP = (1)0+system, being just above threshold. Our results indicate that the ΞNN, ΞΞN and ΞΞNN systems with maximal isospin might be bound.
KW - Baryon-Baryon interactions
KW - Faddeev equations
KW - Variational approaches
UR - http://www.scopus.com/inward/record.url?scp=85027468547&partnerID=8YFLogxK
M3 - Artículo
SN - 0035-001X
VL - 63
SP - 411
EP - 422
JO - Revista Mexicana de Fisica
JF - Revista Mexicana de Fisica
IS - 5
ER -