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arXiv 1103.2255hep-phhep-exnucl-th
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核子的张量性质

Tensor properties of the nucleon

Tim Ledwig, Antonio Silva, Hyun-Chul Kim

摘要:

本文报道了在手征夸克-孤子模型框架内核子张量性质的最新结果。张量和反常张量的磁形状因子计算的动量转移到$Q^{2}\leq1\,\mathrm{GeV}^{2}$和在重整化尺度$0.36\,\mathrm{GeV}^{2}$。主要结果如下:核子的味张量荷分别为$δu=1.08$,$δd=-0.31$,$δs=-0.01$,上、下反常张量磁矩分别为$κ_{T}^{u}=3.56$和$κ_{T}^{d}=1.83$.这个奇怪的反常张量磁矩被证明是$κ_{T}^{s}=0.2\sim -0.2$,与零相容。我们讨论了它们的物理意义,特别是与那些从晶格QCD比较。

英文摘要:

We report in the present talk recent results of the tensor properties of the nucleon within the framework of the chiral quark-soliton model. The tensor and anomalous tensor magnetic form factors are calculated for the momentum transfer up to $Q^{2}\leq1\,\mathrm{GeV}^{2}$ and at a renormalization scale of $0.36\,\mathrm{GeV}^{2}$. The main results are summarized as follows: the flavor tensor charges of the nucleon are yielded as $δu=1.08$, $δd=-0.31$, $δs=-0.01$, while the up and down anomalous tensor magnetic moments are evaluated as $κ_{T}^{u}=3.56$ and $κ_{T}^{d}=1.83$, respectively. The strange anomalous tensor magnetic moment turns out to be $κ_{T}^{s}=0.2\sim -0.2$, compatible with zero. We discuss their physical implications, comparing them in particular with those from the lattice QCD.

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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