Higher twist analysis of the proton g_1 structure function

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dc.creatorOsipenko, M.
dc.creatorMelnitchouk, W.
dc.creatorSimula, S.
dc.creatorBosted, P.
dc.creatorBurkert, V.
dc.creatorChristy, M. E.
dc.creatorGriffioen, K.
dc.creatorKeppel, C.
dc.creatorKuhn, S. E.
dc.date2004-04-22
dc.date2005-01-13
dc.date.accessioned2026-07-07T10:29:08Z
dc.date.available2026-07-07T10:29:08Z
dc.descriptionWe perform a global analysis of all available spin-dependent proton structure function data, covering a large range of Q^2, 1 < Q^2 < 30 GeV^2, and calculate the lowest moment of the g_1 structure function as a function of Q^2. From the Q^2 dependence of the lowest moment we extract matrix elements of twist-4 operators, and determine the color electric and magnetic polarizabilities of the proton to be χ_E = 0.026 +- 0.015 (stat) + 0.021/-0.024 (sys) and χ_B = -0.013 -+ 0.007 (stat) - 0.010/+0.012 (sys), respectively.
dc.description6 pages, 2 figures, to appear in Phys. Lett. B
dc.identifierhttps://arxiv.org/abs/hep-ph/0404195
dc.identifierhttp://arxiv.org/abs/hep-ph/0404195
dc.identifierPhys.Lett.B609:259-264,2005
dc.identifierdoi:10.1016/j.physletb.2005.01.071
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177694
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.subjectNuclear Theory
dc.titleHigher twist analysis of the proton g_1 structure function
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