Axial Charges of Octet Baryons in Two-flavor Lattice QCD

Details Axial Charges of Octet Baryons in Two-flavor Lattice QCD Axial Charges of Octet Baryons in Two-flavor Lattice QCD

2009-11-12

arxiv.org/abs/0911.2447v2

Phys.Lett.B686:36-40,2010

Physics

High Energy Physics

High Energy Physics - Lattice

6 pages, 6 figures. Added discussions and a figure; version to appear in Physics Letters B

Scientific paper

10.1016/j.physletb.2010.02.016

We evaluate the strangeness-conserving $N N$, $\Sigma\Sigma$, $\Xi\Xi$, $\Lambda\Sigma$ and the strangeness-changing $\Lambda N$, $\Sigma N$, $\Lambda\Xi$, $\Sigma\Xi$ axial charges in lattice QCD with two flavors of dynamical quarks and extend our previous work on pseudoscalar-meson-octet-baryon coupling constants so as to include $\pi\Xi\Xi$, $K\Lambda\Xi$ and $K\Sigma\Xi$ coupling constants. We find that the axial charges have rather weak quark-mass dependence and the breaking in SU(3)-flavor symmetry is small at each quark-mass point we consider.

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