The H dibaryon on the lattice
Aug, 20023 pages
Part of Lattice field theory. Proceedings: 20th International Symposium, Lattice 2002, Cambridge, USA, Jun 24-29, 2002, 278-280
Published in:
- Nucl.Phys.B Proc.Suppl. 119 (2003) 278-280
Contribution to:
e-Print:
- hep-lat/0208029 [hep-lat]
Report number:
- BI-TP-2002-20,
- DESY-02-117
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Abstract:
We present our final results for the mass of the six quark flavor singlet state (J^P=0^+, S=-2) called H dibaryon, which would be the lightest possible strangelet in the context of strange quark matter. The calculations are performed in quenched QCD on (8-24)^3 x 30 lattices with the (1,2) Symanzik improved gauge action and the clover fermion action. Furthermore the fuzzing technique for the fermion fields and smearing of the gauge fields is applied in order to enhance the overlap with the ground state. Depending on the lattice size we observe an H mass slightly above or comparable with the \Lambda\Lambda threshold for strong decay. Therefore a bound H dibaryon state seemed to be ruled out by our simulation.Note:
- Lattice2002(spectrum), 3 pages, 2 figures, Proceedings of the XX International Symposium on Lattice Field Theory, June 24-29, 2002 (MIT, Cambridge, USA) Report-no: BI-TP 2002/20, DESY 02-117
- talk: Boston 2002/06/24
- H baryon: mass
- fermion: lattice field theory
- gauge field theory: SU(3)
- approximation: quenching
- numerical calculations: Monte Carlo
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