论文标题
伪量表中的介子:轻型前波功能,GPD和PDF
Pseudo-scalar mesons: light front wave functions, GPDs and PDFs
论文作者
论文摘要
我们开发了一个统一的代数模型,该模型令人满意地描述了Pion和Kaon的内部结构以及重Quarkonia($η_C$和$η_b$)。对于这些介子中的每一个,我们计算通过其光前波函数的重叠表示构建的广义Parton分布(GPD),受到其夸克分布幅度的现代和精确知识的严格限制。从介体的三维知识中,我们推断出Parton分布功能(PDF)以及电磁形式因素,并构建影响参数空间GPD。然后,在实验中探测了用光夸克形成的介子的PDF从大约0.3 GEV的HADRONIC量表演变为5.2 GEV。我们与可用的实验结果以及早期的理论预测进行了明确的比较。
We develop a unified algebraic model which satisfactorily describes the internal structure of pion and kaon as well as heavy quarkonia ($η_c$ and $η_b$). For each of these mesons, we compute their generalized parton distributions (GPDs), built through the overlap representation of their light-front wave function, tightly constrained by the modern and precise knowledge of their quark distribution amplitudes. From this three-dimensional knowledge of mesons, we deduce parton distribution functions (PDFs) as well as electromagnetic form factors and construct the impact parameter space GPDs. The PDFs for mesons formed with light quarks are then evolved from the hadronic scale of around 0.3 GeV to 5.2 GeV, probed in experiments. We make explicit comparisons with experimental results available and with earlier theoretical predictions.