论文标题
物理点的晶格QCD的核子轴向和伪尺度形式
Nucleon axial and pseudoscalar form factors from lattice QCD at the physical point
论文作者
论文摘要
我们使用三个仪表构型的核轴轴向核子轴向和诱导的伪尺度形式因素，并用动态的光夸克产生，并调整了大约其物理值。其中一个合奏还包括奇怪和魅力的夸克，它们的质量接近物理。后一个合奏具有较大的统计数据和更细的晶格间距，并用于获得最终结果，而其他两个则用于评估体积效应。还使用这些集成器计算伪尺度的外形。我们检查了这些形式因素的动量依赖性以及基于斜极优势和部分保守的轴向载体当前假设的关系。
We compute the nucleon axial and induced pseudoscalar form factors using three ensembles of gauge configurations, generated with dynamical light quarks with mass tuned to approximately their physical value. One of the ensembles also includes the strange and charm quarks with their mass close to physical. The latter ensemble has large statistics and finer lattice spacing and it is used to obtain final results, while the other two are used for assessing volume effects. The pseudoscalar form factor is also computed using these ensembles. We examine the momentum dependence of these form factors as well as relations based on pion pole dominance and the partially conserved axial-vector current hypothesis.
