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

Spin Density Matrix Elements (SDMEs) describing the angular distribution of exclusive ρ 0 electroproduction and decay are determined in the HERMES experiment with 27.6 GeV beam energy and unpolarized hydrogen and deuterium targets. Eight (fifteen) SDMEs that are related (unrelated) to the longitudinal polarization of the beam are extracted in the kinematic region 1

Keywords:

• HERMES experiment
• Quantum chromodynamics
• Helicity
• Particle physics
• Quantum electrodynamics
• Nuclear physics
• Spin-½
• Amplitude
• Physics
• Beam (structure)
• Omega
• Density matrix
• HERA
• Meson
• Virtual particle
• Proton

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