Spin Sum Rules and the Strong Coupling Constant at large distance
Nuclear Experiment
2010-05-19 v1
Abstract
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 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.
Cite
@article{arxiv.0906.4285,
title = {Spin Sum Rules and the Strong Coupling Constant at large distance},
author = {A. Deur},
journal= {arXiv preprint arXiv:0906.4285},
year = {2010}
}
Comments
Contribution to proceedings for the Workshop on Spin Structure at Long Distance (Newport News, March 2009)