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arXiv 1609.00253hep-lathep-ph
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格点量子色动力学质子自旋分解的最新结果

Recent results for the proton spin decomposition from lattice QCD

Constantia Alexandrou, Martha Constantinou, Kyriakos Hadjiyiannakou, Christos Kallidonis, Giannis Koutsou, Karl Jansen, Haralambos Panagopoulos, Fernanda Steffe… 展开作者

Constantia Alexandrou, Martha Constantinou, Kyriakos Hadjiyiannakou, Christos Kallidonis, Giannis Koutsou, Karl Jansen, Haralambos Panagopoulos, Fernanda Steffens, Alejandro Vaquero, Christian Wiese

摘要:

质子自旋的精确分解在实验和理论上都是一个备受争议的话题。在这次演讲中,我们将报告最近的非微扰结果和正在进行的努力,探索质子自旋的格点量子色动力学。我们目前的结果,相关的广义形状因子从规范场合奏功能的物理值的π介子质量。这些广义形状因子可以用来确定夸克携带的总自旋和角动量。此外,我们目前的第一个结果,我们正在进行的努力,计算质子中的胶子的角动量。

英文摘要:

The exact decomposition of the proton spin has been a much debated topic, on the experimental as well as the theoretical side. In this talk we would like to report on recent non-perturbative results and ongoing efforts to explore the proton spin from lattice QCD. We present results for the relevant generalized form factors from gauge field ensembles that feature a physical value of the pion mass. These generalized form factors can be used to determine the total spin and angular momentum carried by the quarks. In addition we present first results for our ongoing effort to compute the angular momentum of the gluons in the proton.

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