论文标题
为什么如果不同时确定parton分布
Why $α_s$ Cannot be Determined from Hadronic Processes without Simultaneously Determining the Parton Distributions
论文作者
论文摘要
我们表明，从一个取决于Parton分布的过程（例如HADRONIC过程或深弹性散射）中对强耦合$α_s$的任何确定，通常不会导致正确的结果，除非Parton分布（PDFS）与$α_S$同时确定。我们首先显示一个明确的示例来建立结果，然后说该示例代表了通用情况，我们使用模型在关节空间中使用$α_s$和PDF参数的模型来解释。
We show that any determination of the strong coupling $α_s$ from a process which depends on parton distributions, such as hadronic processes or deep-inelastic scattering, generally does not lead to a correct result unless the parton distributions (PDFs) are determined simultaneously along with $α_s$. We establish the result by first showing an explicit example, and then arguing that the example is representative of a generic situation which we explain using models for the shape of equal $χ^2$ contours in the joint space of $α_s$ and the PDF parameters.
