- Conference date: 6–11 October 2008
- Location: Charlottesville (Virginia)
Double spin asymmetries for the proton and the deuteron have been measured in the EG1B experiment using the CLAS detector at Jefferson Lab. Longitudinally polarized electrons at energies 1.6, 2.5, 4.2 and 5.75 GeV were scattered from longitudinally polarized and targets. The double spin asymmetry for the proton and the deuteron has been extracted from these data as a function of W and with unprecedented precision. The virtual photon asymmetry and the spin structure function can be calculated from these measurements by using parametrization to the world data for the virtual photon asymmetry and the unpolarized structure functions and R. The large kinematic coverage of the experiment ( and ) helps us to better understand the spin structure of the nucleon, especially in the transition region between hadronic and quark‐gluon degrees of freedom. The results on and using the entire data set for the deuteron data are presented.
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