Lambda(1405) and Negative-Parity Baryons in Lattice QCD

Details Lambda(1405) and Negative-Parity Baryons in Lattice QCD Lambda(1405) and Negative-Parity Baryons in Lattice QCD

2004-04-16

arxiv.org/abs/hep-lat/0404012v1

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, 4 figures, talk given at the YITP workshop, ``Multi-quark Hadrons; Four, Five and More?", Kyoto, Japan, 17-19 Februar

Scientific paper

We review briefly recent studies of the Lambda(1405) spectrum in Lattice QCD. Ordinary three-quark pictures of the Lambda(1405) in quenched Lattice QCD fail to reproduce the mass of the experimental value, which seems to support the penta-quark picture for the Lambda(1405) such as a Kbar-N molecule-like state. It is also noted that the present results suffer from relatively large systematic uncertainties coming from the finite volume effect, the chiral extrapolation and the quenching effect.

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