Lattice QCD Calculation of Flavor Singlet Matrix Elements and N-N Scattering Lengths

Details Lattice QCD Calculation of Flavor Singlet Matrix Elements and N-N Scattering Lengths Lattice QCD Calculation of Flavor Singlet Matrix Elements and N-N Scattering Lengths

1995-10-16

arxiv.org/abs/hep-lat/9510025v2

Prog.Theor.Phys.Suppl.122:153-162,1996

Physics

High Energy Physics

High Energy Physics - Lattice

12 pages, latex source-file, 5 figures as epsf-file, talk presented at ''QCD on massively parallel computers'' (Yamagata, Japa

Scientific paper

10.1143/PTPS.122.153

We report on our recent study of flavor singlet matrix elements calculated with the wall source method without gauge fixing. Results are presented for the mass difference between $\eta^{\prime}$ and pseudoscalar octet mesons, the $\pi$-N $\sigma$ term and the proton axial vector matrix elements. An exploratory calculation of the N-N scattering lengths is also discussed including a phenomenological study with one-boson exchange potentials.

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