Experimental study of isovector spin sum rules

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dc.creatorDeur, A.
dc.creatorBosted, P.
dc.creatorBurkert, V.
dc.creatorCrabb, D.
dc.creatorDharmawardane, V.
dc.creatorDodge, G. E.
dc.creatorForest, T. A.
dc.creatorGriffioen, K. A.
dc.creatorKuhn, S. E.
dc.creatorMinehart, R.
dc.creatorProk, Y.
dc.date2008-02-21
dc.date2008-09-24
dc.date.accessioned2026-07-07T11:56:15Z
dc.date.available2026-07-07T11:56:15Z
dc.descriptionWe present the Bjorken integral extracted from Jefferson Lab experiment EG1b for $0.05<Q^{2}<2.92$ GeV$^2$. The integral is fit to extract the twist-4 element $f_{2}^{p-n}$ which appears to be relatively large and negative. Systematic studies of this higher twist analysis establish its legitimacy at $Q^{2}$ around 1 GeV$^{2}$. We also performed an isospin decomposition of the generalized forward spin polarizability $γ_{0}$. Although its isovector part provides a reliable test of the calculation techniques of Chiral Perturbation Theory, our data disagree with the calculations.
dc.description7 pages, 4 figures. Version changed to longer version published in PRD
dc.identifierhttps://arxiv.org/abs/0802.3198
dc.identifierhttp://arxiv.org/abs/0802.3198
dc.identifierPhys.Rev.D78:032001,2008
dc.identifierdoi:10.1103/PhysRevD.78.032001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/205517
dc.subjectNuclear Experiment
dc.titleExperimental study of isovector spin sum rules
dc.typetext

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