Study of spin sum rules (and the strong coupling constant at large distances)
A. Deur
TL;DR
This paper discusses recent Jefferson Lab results on nucleon spin sum rules and introduces an effective strong coupling constant at all distances using the Bjorken sum rule and Gerasimov-Drell-Hearn sum.
Contribution
It provides new insights into the spin structure of the nucleon and proposes a method to define the strong coupling constant at large distances.
Findings
Recent Jefferson Lab results on spin sum rules
Connection between Bjorken sum rule and Gerasimov-Drell-Hearn sum
Definition of an effective strong coupling at all distances
Abstract
We present recent results from Jefferson Lab on sum rules related to the spin structure of the nucleon. We then discuss 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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