Q^2 Evolution of Generalized Baldin Sum Rule for the Proton

Details Q^2 Evolution of Generalized Baldin Sum Rule for the Proton Q^2 Evolution of Generalized Baldin Sum Rule for the Proton

2004-10-19

arxiv.org/abs/nucl-ex/0410028v2

Phys.Rev. C73 (2006) 065201

Physics

Nuclear Physics

Nuclear Experiment

4 pages, 3 figures, one table; text added, one figure replaced

Scientific paper

The generalized Baldin sum rule for virtual photon scattering, the unpolarized analogy of the generalized Gerasimov-Drell-Hearn integral, provides an important way to investigate the transition between perturbative QCD and hadronic descriptions of nucleon structure. This sum rule requires integration of the nucleon structure function F_1, which until recently had not been measured at low Q^2 and large x, i.e. in the nucleon resonance region. This work uses new data from inclusive electron-proton scattering in the resonance region obtained at Jefferson Lab, in combination with SLAC deep inelastic scattering data, to present first precision measurements of the generalized Baldin integral for the proton in the Q^2 range of 0.3 to 4.0 GeV^2.

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