论文标题
非局部手性有效理论中奇怪夸克在质子中的螺旋依赖性分布
Helicity-dependent distribution of strange quarks in the proton from nonlocal chiral effective theory
论文作者
论文摘要
质子中的螺旋依赖性怪夸克分布$ΔS$是在非局部手性su（3）有效场理论中计算的。在单环级别得出了介子质子到介子加八个或解剖baryon拆分函数，而在非局部lagrangian中引入的相关函数则具有有限的循环积分。在卷积框架内，使用自旋培养对称性获得质子奇怪的螺旋分布，以限制HADRONIC中间状态中的输入价Quark分布。偏振奇怪的夸克分布发现很小，最低的$δs$负数为负，但与最近的全球QCD分析一致。
The helicity-dependent strange quark distribution in the proton, $Δs$, is calculated in a nonlocal chiral SU(3) effective field theory. The hadronic proton to meson plus octet or decuplet baryon splitting functions are derived at the one-loop level, with loop integrals rendered finite by correlation functions introduced in the nonlocal Lagrangian. Within the convolution framework, the proton strange helicity distribution is obtained using spin-flavor symmetry to constrain the input valence quark distributions in the hadronic intermediate states. The polarized strange quark distribution is found to be quite small, with the lowest moment of $Δs$ negative, but consistent with recent global QCD analyses.
