H-Dibaryon from Lattice QCD with Improved Anisotropic Actions

Details H-Dibaryon from Lattice QCD with Improved Anisotropic Actions H-Dibaryon from Lattice QCD with Improved Anisotropic Actions

2008-03-21

arxiv.org/abs/0803.3171v2

Mod.Phys.Lett.A22:591-597,2007

Physics

High Energy Physics

High Energy Physics - Lattice

Scientific paper

10.1142/S0217732307023171

The six quark state(uuddss) called H dibaryon($J^P=0^+$,$S=-2$) has been calculated to study its existence and stability. The simulations are performed in quenched QCD on $8^3 \times 24$ and $16^3 \times 48$ anisotropic lattices with Symanzik improved gauge action and Clover fermion action. The gauge coupling is $\beta=2.0$ and aspect ratio $\xi=a_s/a_t=3.0$. Preliminary results indicate that mass of H dibaryon is 2134(100)Mev on $8^3 \times 24$ lattice and 2167(59)Mev on $16^3 \times 48$ respectively. It seems that the radius of H dibaryon is very large and the finite size effect is very obvious.

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