PT Journal
AU Garcilazo, H
   Valcarce, A
   Vijande, J
TI Stable bound states of N's, Lambda's and Xi's
SO Revista Mexicana de Fisica
JI Rev. Mex. Fis.
PY 2017
BP 411
EP 422
VL 63
IS 5
LA English
DE Baryon-Baryon interactions; Faddeev equations; variational approaches
AB 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.
ER