Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2001-10-18
Phys.Rev.Lett.89:032501,2002
Physics
Nuclear Physics
Nuclear Theory
4 pages, 2 figures, revtex4 style. Minor changes in conclusions. References updated. Accepted in Phys. Rev. Lett
Scientific paper
10.1103/PhysRevLett.89.032501
Data on Lambda-Lambda hypernuclei provide a unique method to learn details on the strangeness S =-2 sector of the baryon-baryon interaction. From the free space Bonn-Julich potentials, determined from data on baryon-baryon scattering in the S=0,-1 channels, we construct an interaction in the S =-2 sector to describe the experimentally known Lambda-Lambda hypernuclei. After including short--range (Jastrow) and RPA correlations, we find masses for these Lambda-Lambda hypernuclei in a reasonable agreement with data, taking into account theoretical and experimental uncertainties. Thus, we provide a natural extension, at low energies, of the Bonn-Julich OBE potentials to the S =-2 channel.
Albertus Conrado
Amaro J. E.
Nieves Juan
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