rho meson unpolarized generalized parton distributions with a light-fron constituent quark model
rho meson unpolarized generalized parton distributions with a light-fron constituent quark model
复制标题
具有光前成分夸克模型的 rho 介子非偏振广义部分子分布
DOI：
10.1103/physrevd.96.036019
复制
发表时间：
2017
影响因子：
5
通讯作者：
Yubing Dong
中科院分区：
文献类型：
--
作者：
Baodong SUn;Yubing Dong
我们基于光锋组成夸克模型研究介子非偏振广义部分子分布，其中夸克-反夸克-介子顶点是在对称环动量约定下构造的。计算了主题子的形状因子和其他一些低能量可观测量。此外，还详细讨论和分析了价态和非价态对形状因子和广义部分子分布的贡献。在前向极限中，通常的结构函数也被估计。此外，通过将所获得的结构函数的矩演化到晶格计算的尺度，我们给出了夸克模型的因式分解尺度。发现目前的唯象模型能够合理地描述介子的一般性质。
We studymeson unpolarized generalized parton distributions based on a light-front constituent quark model where the quark-antiquark-meson vertex is constructed under the symmetric loop momentum convention. The form factors and some other low-energy observables of themeson are calculated. Moreover, the contributions to the form factors and generalized parton distributions from the valence and nonvalence regimes are discussed and analyzed in detail. In the forward limit, the usual structure functions are estimated as well. In addition, by evolving the moments of the obtained structure functions to the scale of the lattice calculation, we give the factorization scale of our quark model. It is found that the present phenomenological model is reasonable to describe the general properties ofmeson.