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arXiv 0810.2959hep-phhep-latnucl-th
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重子谱和全息QCD中的双夸克关联

Diquark correlations in baryon spectroscopy and holographic QCD

Hilmar Forkel, Eberhard Klempt

摘要:

我们引入一个改进的质量公式的核子和δ共振,并显示它是如何出现在一个简单的扩展的'度量软壁'重力对偶从AdS/QCD。由此产生的光谱依赖于一个可调参数,表征约束引起的反德西特(AdS)度规的IR变形,并在重子的夸克模型波函数的分数的“好”(即最大吸引力)双夸克。尽管它很简单,但预测的光谱以前所未有的准确度描述了所有48个观测到的轻夸克重子态的质量及其线性轨道结构。

英文摘要:

We introduce an improved mass formula for the nucleon and delta resonances and show how it emerges from AdS/QCD in a straightforward extension of the 'metric soft wall' gravity dual. The resulting spectrum depends on just one adjustable parameter, characterizing confinement-induced IR deformations of the anti-de Sitter (AdS) metric, and on the fraction of 'good' (i.e. maximally attractive) diquarks in the baryon's quark model wave function. Despite its simplicity, the predicted spectrum describes the masses of all 48 observed light-quark baryon states and their linear trajectory structure with unprecedented accuracy.

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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