论文标题
手性有效理论中质子中的奇怪夸克螺旋性
Strange quark helicity in the proton from chiral effective theory
论文作者
论文摘要
我们计算了手性有效理论框架中质子中质量依赖性的怪夸克分布。从尊重Lorentz和仪表不变性的最通用的手性SU（3）Lagrangian开始，我们在一个Meson Loop水平上得出了完整的HADRONIC分裂功能集，包括Octet和Decupet Rainbow，Tadpole，Tadpole，Kroll-Ruderman和Octet-Decuplet Triendinitiontripations。通过匹配Hadronic和Quark级运算符，我们根据HADRONIC构型中的Hadronic分裂函数和夸克分布获得了质子中夸克分布的广义卷积公式，并从这些无关的非依赖模型的关系中，用于其时刻的主要非分析行为。在来自包容性超子产生的Pauli-Villars调节器的参数范围内，我们发现偏振奇怪的夸克分布相当小，大多为负。
We compute the helicity-dependent strange quark distribution in the proton in the framework of chiral effective theory. Starting from the most general chiral SU(3) Lagrangian that respects Lorentz and gauge invariance, we derive the complete set of hadronic splitting functions at the one meson loop level, including the octet and decuplet rainbow, tadpole, Kroll-Ruderman and octet-decuplet transition configurations. By matching hadronic and quark level operators, we obtain generalized convolution formulas for the quark distributions in the proton in terms of hadronic splitting functions and quark distributions in the hadronic configurations, and from these derive model-independent relations for the leading nonanalytic behavior of their moments. Within the limits of parameters of the Pauli-Villars regulators derived from inclusive hyperon production, we find that the polarized strange quark distribution is rather small and mostly negative.
