Spin density matrix elements in exclusive $\omega$ electroproduction on ${}^1$H and ${}^2$H targets at 27.5 GeV beam energy

The HERMES Collaboration, A. Airapetian, N. Akopov +97

Exclusive electroproduction of $\omega$ mesons on unpolarized hydrogen and deuterium targets is studied in the kinematic region of Q${}^2$>1.0 GeV${}^2$, 3.0 GeV < W < 6.3 GeV, and -t'< 0.2…