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We present the results of our final analysis of the full data set ofg_1^p(Q^2), the spin structure function of the proton, collected using CLAS atJefferson Lab in 2000-2001. Polarized electrons with energies of 1.6, 2.5, 4.2and 5.7 GeV were scattered from proton targets (15^NH_3 dynamically polarizedalong the beam direction) and detected with CLAS. From the measured double spinasymmetries, we extracted virtual photon asymmetries A_1^p and A_2^p and spinstructure functions g_1^p and g_2^p over a wide kinematic range (0.05 GeV^2 <Q^2 < 5 GeV^2 and 1.08 GeV < W < 3 GeV), and calculated moments of g_1^p. Wecompare our final results with various theoretical models and expectations, aswell as with parameterizations of the world data. Our data, with theirprecision and dense kinematic coverage, are able to constrain fits of polarizedparton distributions, test pQCD predictions for quark polarizations at large x,offer a better understanding of quark-hadron duality, and provide more precisevalues of higher-twist matrix elements in the framework of the Operator ProductExpansion.

Determination of the Proton Spin Structure Functions for 0.05 < Q^2 < 5 GeV^2 using CLAS