arXiv:nucl-th/0405056·v1·Nuclear Theory
Faddeev calculation of 6 He Lambda Lambda using SU_6 quark-model baryon-baryon interactions
Y. Fujiwara (1) · M. Kohno (2) · K. Miyagawa (3) · Y. Suzuki (4) · J. -M. Sparenberg (5) ((1) Kyoto University · (2) Kyushu Dental College · (3) Okayama Science University · (4) Niigata University · (5) TRIUMF)
Abstract
Quark-model hyperon-nucleon and hyperon-hyperon interactions by the Kyoto-Niigata group are applied to the two-Lambda plus alpha system in a new three-cluster Faddeev formalism using two-cluster resonating-group method kernels. The model fss2 gives a reasonable two-Lambda separation energy Delta B_{Lambda Lambda}=1.41 MeV, which is consistent with the recent empirical value, Delta B^{exp}_{Lambda Lambda}=1.01 +/- 0.20 MeV, deduced from the Nagara event. Some important effects that are not taken into account in the present calculation are discussed.
Comments: 4 pages, one figure