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arXiv 1704.06968hep-phnucl-th
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夸克偶素作为光阵面上的相对论束缚态

Quarkonium as relativistic bound state on the light front

Yang Li, Pieter Maris, James P. Vary

摘要:

我们研究粲和bottomonium作为相对论束缚态的光前量子化哈密顿形式主义。有效哈密顿量是基于光阵面全息。我们使用最近提出的纵向约束,以完成软壁全息潜力的重口味。自旋结构是由一个运行耦合的单胶子交换相互作用产生的。渐近自由的采用提高了光谱与以前的光前的结果相比。在这个模型中,我们计算了质谱,衰变常数和r.m.s.半径。我们还提出了一个详细的研究所获得的光波前波函数,并使用波函数来计算光锥分布,特别是分布振幅和部分子分布函数。总的来说,我们的模型提供了一个合理的重夸克偶素的描述。

英文摘要:

We study charmonium and bottomonium as relativistic bound states in a light-front quantized Hamiltonian formalism. The effective Hamiltonian is based on light-front holography. We use a recently proposed longitudinal confinement to complete the soft-wall holographic potential for the heavy flavors. The spin structure is generated from the one-gluon exchange interaction with a running coupling. The adoption of asymptotic freedom improves the spectroscopy compared with previous light-front results. Within this model, we compute the mass spectroscopy, decay constants and the r.m.s. radii. We also present a detailed study of the obtained light-front wave functions and use the wave functions to compute the light-cone distributions, specifically the distribution amplitudes and parton distribution functions. Overall, our model provides a reasonable description of the heavy quarkonia.

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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