The six quark state(uuddss) called H dibaryon(JP=0+,S=−2) has been calculated to study its existence and stability. The simulations are performed in quenched QCD on 83×24 and 163×48 anisotropic lattices with Symanzik improved gauge action and Clover fermion action. The gauge coupling is β=2.0 and aspect ratio ξ=as/at=3.0. Preliminary results indicate that mass of H dibaryon is 2134(100)Mev on 83×24 lattice and 2167(59)Mev on 163×48 respectively. It seems that the radius of H dibaryon is very large and the finite size effect is very obvious.
@article{arxiv.0803.3171,
title = {H-Dibaryon from Lattice QCD with Improved Anisotropic Actions},
author = {Zhi-Huan Luo and Mushtaq Loan and Xiang-Qian Luo},
journal= {arXiv preprint arXiv:0803.3171},
year = {2008}
}