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arXiv 1111.4314hep-lat
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具有HISQ系综的格点量子色动力学中轻赝标的性质

Properties of light pseudoscalars from lattice QCD with HISQ ensembles

MILC Collaboration, A. Bazavov, C. Bernard, C. DeTar, W. Freeman, Steven Gottlieb, U. M. Heller, J. E. Hetrick, J. Kim, J. Laiho, L. Levkova, M. Lightman, M. Ok… 展开作者

MILC Collaboration, A. Bazavov, C. Bernard, C. DeTar, W. Freeman, Steven Gottlieb, U. M. Heller, J. E. Hetrick, J. Kim, J. Laiho, L. Levkova, M. Lightman, M. Oktay, J. Osborn, R. L. Sugar, D. Toussaint, R. S. Van de Water

摘要:

我们将由MILC产生的HISQ组态的轻赝标质量和衰变常数的格点QCD数据拟合到SU(3)交错手征微扰理论。目前这种拟合具有相当高的卡方系数/d.o.f.值,这可能是由于缺乏比物理质量轻的海洋奇异夸克质量的合奏。我们提出了解决这个问题的未来工作。在物理点附近对两个不同格点间距的系综进行了简单的线性插值,得到了在连续极限下的初步结果(f_K / f_pi)^phys = 1.1872(41).

英文摘要:

We fit lattice-QCD data for light-pseudoscalar masses and decay constants, from HISQ configurations generated by MILC, to SU(3) staggered chiral perturbation theory. At present such fits have rather high values of chi^2/d.o.f., possibly due to the lack of ensembles with lighter-than-physical sea strange-quark masses. We propose solutions to this problem for future work. We also perform simple linear interpolations near the physical point on two ensembles with different lattice spacings, and obtain the preliminary result (f_K / f_pi)^phys = 1.1872(41) in the continuum limit.

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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