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arXiv 1810.05971nucl-thhep-ph
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$B_c$介子及其在光阵面上的性质

$B_c$ mesons and their properties on the light front

Shuo Tang, Yang Li, Pieter Maris, James P. Vary

摘要:

本文在光阵面哈密顿体系中研究了不等质量相对论束缚态系统$B_c$介子。我们采用了一个有效的哈密顿量的基础上软壁光前全息,连同纵向限制,首先介绍了重夸克偶素。我们还包括一个胶子交换相互作用与运行耦合,它产生的自旋结构。我们给出了质谱和光阵面波函数。我们也使用光阵面波函数来计算衰变常数、电荷和动量密度,以及分布振幅。结果与实验和其他理论方法进行了比较,所有这些都是在合理的协议。

英文摘要:

We investigate the unequal mass relativistic bound state system, the $B_c$ mesons, in a light-front Hamiltonian formalism. We adopt an effective Hamiltonian based on soft-wall light-front holography, together with a longitudinal confinement that was first introduced for heavy quarkonium. We also include the one gluon-exchange interaction with a running coupling, which produces the spin structure. We present the mass spectrum and light-front wave functions. We also use the light-front wave functions to calculate decay constants, charge and momentum densities, as well as distribution amplitudes. The results are compared with experiments and other theoretical approaches, all of which are in reasonable agreement.

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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