P. Decowski

Precision determination of the neutron spin structure function g1 n

We report on a precision measurement of the neutron spin structure function

Measurements of the Q**2 dependence of the proton and neutron spin structure functions g(1)**p and g(1)**n

g^n_1

Measurement of the deuteron spin structure function g1d(x) for 1 (GeV/c)2 < Q2 < 40 (GeV/c)2

using deep inelastic scattering of polarized electrons by polarized ^3He. For the kinematic range 0.014<x<0.7 and 1 (GeV/c)^2< Q^2< 17 (GeV/c)^2, we obtain

Precision measurement of the proton and deuteron spin structure functions g2 and asymmetries A2

\int^{0.7}_{0.014} g^n_1(x)dx = -0.036 \pm 0.004 (stat) \pm 0.005 (syst)

Constraints on the nucleon strange form factors at Q2∼0.1 GeV2

at an average

Next-to-leading order QCD analysis of polarized deep inelastic scattering data

Q^2=5 (GeV/c)^2

Constraints on the nucleon strange form factors at Q(2)similar to 0.1 GeV2

. We find relatively large negative values for

High-precision measurement of the proton elastic form factor ratio mu_pG_E/G_M at low Q^2.

g^n_1

High-precision measurement of the proton elastic form factor ratio μpGE/GM at low Q2

at low

Inclusive hadron photoproduction from longitudinally polarized protons and deuterons

x