Further Evidence for an unstable H-Dibaryon?

Details Further Evidence for an unstable H-Dibaryon? Further Evidence for an unstable H-Dibaryon?

1999-09-07

arxiv.org/abs/hep-lat/9909037v1

Nucl.Phys.Proc.Suppl. 83 (2000) 218-220

Physics

High Energy Physics

High Energy Physics - Lattice

Poster at LATTICE99 (QCD Spectrum and Quark Masses), 3 pages, 4 figures, LaTeX2e using espcrc2.sty

Scientific paper

We present preliminary results for the mass of the 6q flavor-singlet state ($J^P=0^+$, $S=-2$) called H-dibaryon, calculated in quenched QCD on $16^3$x30 and $24^3$x30 lattices with improved gauge and fermion actions (Symanzik improvement, Clover action). For both lattice sizes we applied the fuzzing technique to enhance the overlap with the ground state. We observe a H-mass above the $\Lambda\Lambda$ threshold for strong decay. The difference in mass, $m_H - 2m_\Lambda$, increases with increasing lattice size.

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