Chiral Corrections to Baryon Masses Calculated within Lattice QCD

Details Chiral Corrections to Baryon Masses Calculated within Lattice QCD Chiral Corrections to Baryon Masses Calculated within Lattice QCD

1999-09-17

arxiv.org/abs/nucl-th/9909041v1

Nucl.Phys.A663:973-976,2000

Physics

Nuclear Physics

Nuclear Theory

4 pages, 2 figures, Contribution to the Proceedings of the 15th Particles and Nuclei International Conference (PANIC 99), Upps

Scientific paper

10.1016/S0375-9474(99)00742-3

Consideration of the analytic properties of pion-induced baryon self energies leads to new functional forms for the extrapolation of light baryon masses. These functional forms reproduce the leading non-analytic behavior of chiral perturbation theory, the correct non-analytic behavior at the $N \pi$ threshold and the appropriate heavy-quark limit. They involve only three unknown parameters, which may be obtained by fitting lattice QCD data. Recent dynamical fermion results from CP-PACS and UKQCD are extrapolated using these new functional forms. We also use these functions to probe the limit of applicability of chiral perturbation theory.

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