Precise determination of the spin structure function ${\mathbf{g}}_1$ of the proton, deuteron and neutron

The HERMES Collaboration, A. Airapetian

Precise measurements of the spin structure functions of the proton $g_1^p(x,Q^2)$ and deuteron $g_1^d(x,Q^2)$ are presented over the kinematic range $0.0041\le x\le 0.9$ and $0…