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Nucleon spin structure functions in the resonance region with constituent quark models

โœ Scribed by Yu-Bing Dong

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
182 KB
Volume
678
Category
Article
ISSN
0375-9474

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โœฆ Synopsis

Q 2 -evolution of the nucleon spin structure functions g 1 , g 2 and the generalized Gerasimov-Drell-Hearn sum rule in the small-Q 2 region are investigated by considering the resonance contributions based on nonrelativistic constituent quark model and on relativistic four-dimensional harmonic oscillator model, respectively. Results of the two models are compared and the relativistic effects are discussed. Moreover, influences of the longitudinal transitions of the resonances on the sum rules of the nucleon spin structure functions are addressed.

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Polarized structure functions of the nuc
Polarized structure functions of the nucleon in the resonance region
โœ D. Drechsel; S.S. Kamalov; G. Krein; B. Pasquini; L. Tiator ๐Ÿ“‚ Article ๐Ÿ“… 2000 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 214 KB

We present predictions for the spin structure functions of the proton in the framework of a unitary isobar model for one-pion photo-and electroproduction. Our results are compared with recent experimental data from SLAC. The first moments of the calculated structure functions fullfil the Gerasimov-D