标题： 激发夸克偶素态的光锥夸克模型谱学 显示英文标题

标题： Spectroscopy of excited quarkonium states in the light-front quark model

摘要： 我们研究了重夸克胶子态（$1S$）、径向激发态（$2S$）和（$3S$）以及轨道激发态（$1P$）在轻子面上夸克模型（LFQM）中的重夸克介子（$c \bar c$）和底夸克介子（$b \bar b$）。 光子的轻规范波函数在过去成功地解释了介子态的各种物理性质，特别是$1S$和$2S$态。 然而，关于径向激发态$3S$和轨道激发态$1P$的研究此前几乎未被进行。 在本研究中，我们研究了这两个激发态，并探讨了夸克胶子系统的电磁形式因子（EMFFs）、电荷半径、衰变常数、部分子分布函数（PDFs）和分布幅度（DAs）。 为了全面起见，我们还包含了对夸克胶子介子基态和第一激发态的研究。 我们还展示了径向激发态的三维波函数，以研究它们的节点结构。 显示英文摘要

摘要： We have investigated the ground state ($1S$), radially excited states ($2S$) and ($3S$) along with the orbitally excited state ($1P$) for the heavy charmonia ($c \bar c$) and bottomonia ($b \bar b$) mesons in the light-front quark model (LFQM). The light-front wave functions have been successful in explaining various physical properties of meson states in the past, especially for the $1S$ and $2S$ states. However, studies regarding the radially excited state $3S$ and orbitally excited state $1P$ have hardly been pursued before. In this study, we take up these two excited states and investigate the electromagnetic form factors (EMFFs), charge radii, decay constants, parton distribution functions (PDFs) and the distribution amplitudes (DAs) for the quarkonia system. For the sake of completeness, we have also included the study of the ground and the first excited states of quarkonia mesons. We have also illustrated the 3D wave functions for the radially excited states in order to study their nodal structures.