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arXiv 1206.4527hep-lathep-phnucl-th
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含轻Wilson夸克的格点量子色动力学中的核子标量荷和张量荷

Nucleon Scalar and Tensor Charges from Lattice QCD with Light Wilson Quarks

J. R. Green, J. W. Negele, A. V. Pochinsky, S. N. Syritsyn, M. Engelhardt, S. Krieg

摘要:

本文给出了核子标量荷和张量荷的2+1味格点量子色动力学计算。使用宝马三叶草改进威尔逊行动与π介子质量之间的150和350兆电子伏和三个源-汇分离0.9和1.4之间的调频,我们实现了很好的控制激发态污染和外推到物理π介子质量。作为一个一致性检查,我们还提出了计算结果,使用酉域壁费米子与π介子质量在300和400兆电子伏之间,并使用域壁价夸克和交错海夸克与π介子质量在300和600兆电子伏之间。

英文摘要:

We present 2+1 flavor Lattice QCD calculations of the nucleon scalar and tensor charges. Using the BMW clover-improved Wilson action with pion masses between 150 and 350 MeV and three source-sink separations between 0.9 and 1.4 fm, we achieve good control over excited-state contamination and extrapolation to the physical pion mass. As a consistency check, we also present results from calculations using unitary domain wall fermions with pion masses between 300 and 400 MeV, and using domain wall valence quarks and staggered sea quarks with pion masses between 300 and 600 MeV.

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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