Document Type

Article

Publication Date

2008

DOI

10.1103/PhysRevD.78.032001

Publication Title

Physical Review D

Volume

78

Issue

3

Pages

032001 (1-7)

Abstract

We present the Bjorken integral extracted from Jefferson Lab experiment EG1b for 0.05< Q2 2. The integral is fit to extract the twist-4 element f p−n2 which appears to be relatively large and negative. Systematic studies of this higher twist analysis establish its legitimacy at Q2 around 1  GeV2. We also performed an isospin decomposition of the generalized forward spin polarizability γ0. Although its isovector part provides a reliable test of the calculation techniques of chiral perturbation theory, our data disagree with the calculations.

Comments

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Original Publication Citation

Deur, A., Bosted, P., Burkert, V., Crabb, D., Dharmawardane, V., Dodge, G. E., . . . Prok, Y. (2008). Experimental study of isovector spin sum rules. Physical Review D, 78(3), 032001. doi:10.1103/PhysRevD.78.032001

ORCID

0000-0003-1582-2376 (Dodge), 0000-0003-2243-6836 (Kuhn)

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