Possible Dibaryons with Strangeness s=-5

Details Possible Dibaryons with Strangeness s=-5 Possible Dibaryons with Strangeness s=-5

1999-07-19

arxiv.org/abs/nucl-th/9907074v1

Phys.Rev. C62 (2000) 028202

Physics

Nuclear Physics

Nuclear Theory

10 pages, latex

Scientific paper

10.1103/PhysRevC.62.028202

In the framework of $RGM$, the binding energy of the six quark system with strangeness s=-5 is systematically investigated under the SU(3) chiral constituent quark model. The single $\Xi^*\Omega$ channel calculation with spins S=0 and 3 and the coupled $\Xi\Omega$ and $\Xi^*\Omega$ channel calculation with spins S=1 and 2 are considered, respectively. The results show following observations: In the spin=0 case, $\Xi^* \Omega$ is a bound dibaryon with the binding energy being $80.0 \sim 92.4 MeV$. In the S=1 case, $\Xi\Omega$ is also a bound dibaryon. Its binding energy is ranged from $26.2 MeV$ to $32.9 MeV$. In the S=2 and S=3 cases, no evidence of bound dibaryons are found. The phase shifts and scattering lengths in the S=0 and S=1 cases are also given.

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