Axial charges of octet baryons in two-flavor lattice QCD
Axial charges of octet baryons in two-flavor lattice QCD
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DOI：
10.1016/j.physletb.2010.02.016
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发表时间：
2009-11
影响因子：
4.4
通讯作者：
G. Erkol;M. Oka;T. T. Takahashi-T.
中科院分区：
文献类型：
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作者：
G. Erkol;M. Oka;T. T. Takahashi-T.
我们评估strangeness-conserving NN,ΣΣ,ΞΞ,ΛΣ和strangeness-changingΛN,ΣN,ΛΞ,ΣΞ晶格量子色动力学中的轴向指控两个口味的动力夸克和扩展我们的以前的工作pseudoscalar-meson-octet-baryon耦合常数,包括πΞΞ,KΛΞ和KΣΞ耦合常数。我们发现轴向电荷对夸克质量的依赖性很弱，SU(3)-flavor对称的破缺在我们考虑的每个夸克质量点上都很小。
We evaluate the strangeness-conserving NN, ΣΣ, ΞΞ, ΛΣ and the strangeness-changing ΛN, ΣN, ΛΞ, ΣΞ 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 πΞΞ, KΛΞ and KΣΞ 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.