Dihyperon in Chiral Colour Dielectric Model

Details Dihyperon in Chiral Colour Dielectric Model Dihyperon in Chiral Colour Dielectric Model

1997-08-08

arxiv.org/abs/nucl-th/9708011v1

Phys.Rev.C58:1714-1719,1998

Physics

Nuclear Physics

Nuclear Theory

LaTeX, 13 pages

Scientific paper

10.1103/PhysRevC.58.1714

The mass of dihyperon with spin, parity $J^{\pi}=0^{+}$ and isospin $I = 0$ is calculated in the framework of Chiral colour dielectric model. The wave function of the dihyperon is expressed as a product of two colour-singlet baryon clusters. Thus the quark wave functions within the cluster are antisymmetric. Appropriate operators are then used to antisymmetrize inter-cluster quark wave functions. The radial part of the quark wavefunctions are obtained by solving the the quark and dielectric field equations of motion obtained in the Colour dielectric model. The mass of the dihyperon is computed by including the colour magnetic energy as well as the energy due to meson interaction. The recoil correction to the dihyperon mass is incorporated by Peierls-Yoccoz technique. We find that the mass of the dihyperon is smaller than the $\Lambda-\Lambda$ threshold by over 100 MeV. The implications of our results on the present day relativistic heavy ion experiments is discussed.

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