Present Constraints on the H-dibaryon at the Physical Point from Lattice QCD

Details Present Constraints on the H-dibaryon at the Physical Point from Lattice QCD Present Constraints on the H-dibaryon at the Physical Point from Lattice QCD

2011-03-15

arxiv.org/abs/1103.2821v2

Mod. Phys. Lett. A26: 2587, 2011

Physics

High Energy Physics

High Energy Physics - Lattice

8 pages, 2 figures, 1 table; revised for the journal

Scientific paper

The current constraints from lattice QCD on the existence of the H-dibaryon are discussed. With only two significant lattice QCD calculations of the H-dibaryon binding energy at approximately the same lattice spacing, the forms of the chiral and continuum extrapolations to the physical point are not determined. In this brief report, we consider the constraints on the H-dibaryon imposed by two simple chiral extrapolations. In both instances, the extrapolation to the physical pion mass allows for a bound H-dibaryon or a near-threshold scattering state. Further lattice QCD calculations are required to clarify this situation.

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