The Lambda-Lambda Interaction and ^{6}_{Lambda Lambda}He
Abstract
An OBE potential model for the ^{1}S_0 S = -2 interaction is analyzed with emphasis on the role of coupling between the Lambda Lambda, N Xi, and Sigma Sigma channels. Singlet scalar exchange, an approximation to two-pion exchange, is significant in all channels; surprisingly, the one-pion exchange component is almost negligible. The size of the channel coupling as a function of the overall strength of the OBE model potential is examined. Implications of the analysis for the binding energy of ^{6}_{Lambda Lambda}He are considered; the new experimental datum may suggest a consistency between the extracted Lambda Lambda matrix element and the relation implied by SU(3) among OBE baryon-baryon interactions. \\
Cite
@article{arxiv.nucl-th/0207058,
title = {The Lambda-Lambda Interaction and ^{6}_{Lambda Lambda}He},
author = {I. R. Afnan and B. F. Gibson},
journal= {arXiv preprint arXiv:nucl-th/0207058},
year = {2009}
}
Comments
4 pages brief report to Physical Review C