自旋求和规则与远距离强耦合常数
Spin Sum Rules and the Strong Coupling Constant at large distance
摘要：
我们目前的Bjorken和广义前向自旋极化率和规则从杰斐逊实验室大厅A和CLAS实验，专注于低$Q^2$部分的测量结果。然后，我们讨论这些结果与手征微扰理论计算的比较。在本文的第二部分中，我们将展示如何Bjorken求和规则与Gerasimov-Drell-Hearn求和的联系，使我们能够方便地定义所有距离上的强力的有效耦合。
英文摘要：
We present recent results on the Bjorken and the generalized forward spin polarizability sum rules from Jefferson Lab Hall A and CLAS experiments, focusing on the low $Q^2$ part of the measurements. We then discuss the comparison of these results with Chiral Perturbation theory calculations. In the second part of this paper, we show how the Bjorken sum rule with its connection to the Gerasimov-Drell-Hearn sum, allows us to conveniently define an effective coupling for the strong force at all distances.
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