Seitz, B. (2001) The Q2-dependence of the generalized GDH integral for the proton. In: Fourteenth International Spin Physics Symposium, SPIN2000, Osaka, Japan, 16-21 Oct 2001, p. 878. (doi: 10.1063/1.1384184)
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Publisher's URL: http://dx.doi.org/10.1063/1.1384184
Abstract
The Q2 -dependence of the generalized GDH integral for the proton has been measured in the range 1.2 GeV2<Q2<12 GeV2 by scattering longitudinally polarized positrons on a longitudinally polarized hydrogen gas target. HERMES has previously published a measurement of the deep inelastic portion of the generalized GDH integral. New results for the full integral were shown, including the resonance contribution for W<2 GeV. The contributions of the nucleon resonance and deep inelastic regions have been evaluated separately. The latter has been found to dominate for Q2>3 GeV2. The total integral shows no significant deviation from a 1/Q2 behavior in the measured Q2 range indicating no effects due to either nucleon resonance excitations or non-leading twist. The combination of the data in the resonance and DIS regions provides the first measurement of the Q2 -dependence of the generalized GDH integral.
Item Type: | Conference Proceedings |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Seitz, Dr Bjoern |
Authors: | Seitz, B. |
College/School: | College of Science and Engineering > School of Physics and Astronomy |
Journal Name: | AIP Conference Proceedings |
ISSN: | 0094-243X |
ISSN (Online): | 1551-7616 |
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