Experimental study of isovector spin sum rules
Nuclear Experiment
2008-11-26 v2
Abstract
We present the Bjorken integral extracted from Jefferson Lab experiment EG1b for GeV. The integral is fit to extract the twist-4 element which appears to be relatively large and negative. Systematic studies of this higher twist analysis establish its legitimacy at around 1 GeV. We also performed an isospin decomposition of the generalized forward spin polarizability . Although its isovector part provides a reliable test of the calculation techniques of Chiral Perturbation Theory, our data disagree with the calculations.
Cite
@article{arxiv.0802.3198,
title = {Experimental study of isovector spin sum rules},
author = {A. Deur and P. Bosted and V. Burkert and D. Crabb and V. Dharmawardane and G. E. Dodge and T. A. Forest and K. A. Griffioen and S. E. Kuhn and R. Minehart and Y. Prok},
journal= {arXiv preprint arXiv:0802.3198},
year = {2008}
}
Comments
7 pages, 4 figures. Version changed to longer version published in PRD