发表机构
Shahid Bahonar University of Kerman; University of Tehran; Dogus University（沙希德·巴农加尔克尔曼大学; 德黑兰大学; 多格斯大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文基于指数表示方案和修正手征夸克模型，计算K+介子的价夸克广义部分子分布函数及电磁和引力形状因子，并与实验和理论结果比较。
AI 中文摘要
我们通过计算$K^+$介子的价夸克（反夸克）广义部分子分布函数（GPDs）和形状因子（FFs）来研究其结构。为此，我们采用基于指数表示方案（ERS）的理论框架。在该方案中，轻介子（包括K介子）的价夸克GPDs在零斜度下被视为价夸克分布函数乘以轮廓函数的指数形式。我们应用修正手征夸克模型（$\chi QM$）在上述方案中获得K介子的输入价夸克分布函数，并计算其价夸克GPDs。我们还确定了K介子的电磁和引力形状因子，并与现有实验数据以及一些理论和唯象模型的结果进行了比较。
英文摘要
We investigate the structure of the $K^+$ meson through calculating its valence-quark (anti quark) generalized parton distribution functions (GPDs) and form factors (FFs). For this purpose, we use a theoretical framework which is based on the exponential representation scheme (ERS). In this scheme the valence-quark GPDs of the light mesons, including the kaon, are considered as the valence quark distribution function crossed by the exponential of a profile function, at zero skewness. We apply the modified chiral quark model ($χQM$ ) to obtain the input valence distribution functions of the kaon in above scheme and calculate its valence GPDs. The kaon's electromagnetic and gravitational form factors are also determined and compared with existing experimental data and the results of some theoretical and phenomenological models.
Comments7 Pages and 7 Figures
