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arXiv 0911.0472hep-lat
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SU(2)对轻赝标质量和衰变常数的手征拟合

SU(2) chiral fits to light pseudoscalar masses and decay constants

A. Bazavov, C. Bernard, C. DeTar, X. Du, W. Freeman, Steven Gottlieb, Urs M. Heller, J. E. Hetrick, J. Laiho, L. Levkova, M. B. Oktay, J. Osborn, R. Sugar, D. T… 展开作者

A. Bazavov, C. Bernard, C. DeTar, X. Du, W. Freeman, Steven Gottlieb, Urs M. Heller, J. E. Hetrick, J. Laiho, L. Levkova, M. B. Oktay, J. Osborn, R. Sugar, D. Toussaint, R. S. Van de Water

摘要:

本文用SU(2)部分猝灭交错手征微扰理论拟合了轻赝标区的最新数据。超精细(a~0.06 fm)和超细(a~0.045 fm)系综被使用,其中轻海夸克质量和味道分裂与奇异夸克质量相比很小。我们的拟合包括连续NNLO手征谱和解析项。给出了双味手征极限下π介子衰变常数、SU(2)低能常数和手征凝聚体的初步结果。

英文摘要:

We present the results of fits to recent asqtad data in the light pseudoscalar sector using SU(2) partially-quenched staggered chiral perturbation theory. Superfine (a~0.06 fm) and ultrafine (a~0.045 fm) ensembles are used, where light sea quark masses and taste splittings are small compared to the strange quark mass. Our fits include continuum NNLO chiral logarithms and analytic terms. We give preliminary results for the pion decay constant, SU(2) low-energy constants and the chiral condensate in the two-flavor chiral 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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