论文标题
基于轻量量化框架的轻介子
Light mesons within the basis light-front quantization framework
论文作者
论文摘要
我们将光线无味的介体作为相对论的结合状态研究，这是基础轻量化（BLFQ）方法的非扰动哈密顿形式主义。这些介体的价值夸克的动力学是由有效的哈密顿量含有单云的交换相互作用的有效哈密顿量和在我们先前关于重夸克尼亚的重质Quarkonia中引入的限制电势的，还补充了伪cudoscalar接触相互作用。我们在基础功能表示中对该哈密顿量进行对角线，以获得质谱和光率波函数（LFWFS）。然后，基于这些LFWF，我们通过计算电磁形式，衰减常数，Parton分布振幅（PDA）和Parton分布函数（PDFS）来研究这些介体的结构。我们的结果与实验和其他理论模型中的结果相媲美。
We study the light-unflavored mesons as relativistic bound states in the nonperturbative Hamiltonian formalism of the basis light-front quantization (BLFQ) approach. The dynamics for the valence quarks of these mesons is specified by an effective Hamiltonian containing the one-gluon exchange interaction and the confining potentials both introduced in our previous work on heavy quarkonia, supplemented additionally by a pseudoscalar contact interaction. We diagonalize this Hamiltonian in our basis function representation to obtain the mass spectrum and the light-front wave functions (LFWFs). Based on these LFWFs, we then study the structure of these mesons by computing the electromagnetic form factors, the decay constants, the parton distribution amplitudes (PDAs), and the parton distribution functions (PDFs). Our results are comparable to those from experiments and other theoretical models.
