Search for H dibaryon on the lattice

Abstract

We investigate the H-dibaryon, an $I(J^P)=0(0^{+})$ with $s=-2$, in the chiral and continuum regimes on anisotropic lattices in quenched QCD. Simulations are performed on very coarse lattices with refined techniques to obtain results with high accuracy over a spatial lattice spacing in the range of $a_s\sim 0.19-0.41$ fm. We present results for the energy difference between the ground state energy of the hexa-quark stranglet and the free two-baryon state from our ensembles. A negative binding energy observed in the chirally extrapolated results leads to the conclusion that the measured hexa-quark state is bound. This is further confirmed by the attractive interaction in the continuum limit with the observed H-dibaryon bound by $\sim 47$ MeV.

7 pages, 5 figures, Accepted for publication in Phys. Rev. D

References in corpus (5)

• Nuclear Force from Lattice QCD
• Bound H-dibaryon in Flavor SU(3) Limit of Lattice QCD
• Evidence for a Bound H-dibaryon from Lattice QCD
• Light hadron spectroscopy using domain wall valence quarks on an Asqtad sea
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• Spectrum of two-flavored spin-zero heavy dibaryons in lattice QCD
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• Double-strangeness production in $\Lambda p\to K^{+}X$ reaction