Measurements of the Q{sup 2}-Dependence of the Proton and Neutron SpinStructure Functions g{sub 1}{sup p} and g{sub 1}{sup n}
| Autor: | Peter Bosted |
|---|---|
| Rok vydání: | 2000 |
| Předmět: | |
| DOI: | 10.2172/763828 |
| Popis: | The structure functions g{sub 1}{sup p} and g{sub 1}{sup n} have been measured over the range 0.014 < x < 0.9 and 1 < Q{sup 2} < 40 GeV{sup 2} using deep-inelastic scattering of 48 GeV longitudinally polarized electrons from polarized protons and deuterons. The authors find that the Q{sup 2} dependence of g{sub 1}{sup p}(g{sub 1}{sup n}) at fixed x is very similar to that of the spin-averaged structure function F{sub 1}{sup p} (F{sub 1}{sup n}). From an NLO QCD fit to all available data they find Gamma{sub 1}{sup p}-Gamma{sub 1}{sup p} = 0.176 {+-} 0.003 {+-} 0.007 at Q{sup 2} = 5 GeV{sub 2}, in agreement with the Bjorken sum rule prediction of 0.182 {+-} 0.005. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|