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arXiv 1802.07249hep-ph
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核子的三维成像

Three Dimensional Imaging of the Nucleon

Jai More, Asmita Mukherjee, Sreeraj Nair

摘要:

利用光阵面波函数的重叠,研究了光阵面缀饰夸克模型中夸克和胶子的Wigner分布。我们把目标设为一个缀饰夸克,这是一个缀饰了胶子的复合自旋$-1/2$态夸克。这种状态使我们能够计算夸克和胶子维格纳分布解析的LFWF使用哈密顿微扰理论。我们数值分析了夸克和胶子的维格纳分布,并在等高线图中报告了它们的性质。我们使用一种改进的数值方法来消除${\bf Δ}_\perp$上的傅里叶变换积分的截止依赖性。

英文摘要:

We study the Wigner distributions of quarks and gluons in light-front dressed quark model using the overlap of light front wave functions (LFWFs). We take the target to be a dressed quark, this is a composite spin $-1/2$ state of quark dressed with a gluon. This state allows us to calculate the quark and gluon Wigner distributions analytically in terms of LFWFs using Hamiltonian perturbation theory. We analyze numerically the Wigner distributions of quark and gluon and report their nature in the contour plots. We use an improved numerical technique to remove the cutoff dependence of the Fourier transformed integral over ${\bf Δ}_\perp$.

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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