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arXiv 1012.1522hep-phhep-lat
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SU(3)振幅的手性外推

Chiral extrapolation of SU(3) amplitudes

Gerhard Ecker

摘要:

我们提出了手征SU(3)振幅在NNLO处的近似值,以便于将格点数据外推到物理介子质量。包含NNLO项对于研究手征SU(3)的收敛性质和以可控的方式确定低能常数是必不可少的。用最近的点阵数据对这些近似进行了检验,得到了衰变常数F_K/F_pi的比值。

英文摘要:

Approximations of chiral SU(3) amplitudes at NNLO are proposed to facilitate the extrapolation of lattice data to the physical meson masses. Inclusion of NNLO terms is essential for investigating convergence properties of chiral SU(3) and for determining low-energy constants in a controllable fashion. The approximations are tested with recent lattice data for the ratio of decay constants F_K/F_pi.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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