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arXiv 1209.2791hep-lathep-ph
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关于重子基态质量最近QCD格点数据的一致性

On the consistency of recent QCD lattice data of the baryon ground-state masses

M. F. M. Lutz, A. Semke

摘要:

在我们最近的分析晶格数据的宝马,LHPC和PACS-CS集团,我们确定了一个参数集的手征拉格朗日,允许同时描述重子八重态和十重态质量测量的晶格群。HSC组的重子谱的结果被准确地恢复,而不包含在我们的6参数拟合中。我们发现,相同的参数集提供了一个准确的再现最近的结果QCDSF-UKQCD组探测重子质量在不同的夸克质量。这显示了不同晶格模拟之间的显著一致性。在不久的将来,随着更精确的晶格数据,确定N $^3$ LO处所有相关的低能参数将变得可行。

英文摘要:

In our recent analysis of lattice data of the BMW, LHPC and PACS-CS groups we determined a parameter set of the chiral Lagrangian that allows a simultaneous description of the baryon octet and decuplet masses as measured by those lattice groups. The results on the baryon spectrum of the HSC group were recovered accurately without their inclusion into our 6 parameter fit. We show that the same parameter set provides an accurate reproduction of the recent results of the QCDSF-UKQCD group probing the baryon masses at quite different quark masses. This shows a remarkable consistency amongst the different lattice simulations. With even more accurate lattice data in the near future it will become feasible to determine all low-energy parameters relevant at N$^3$LO.

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