Abstract
Electroproduction of the ρ0 vector meson in the process γ* + N → V + N′ is studied with a 27.6 GeV longitudinally polarized electron/positron beam in the HERMES experiment. Kinematical dependences of real and imaginary parts of the ratio of the natural-parity-exchange helicity amplitudes T11/T00 (γ*T → ρT) and T01/T00 (γ*T → ρL) are extracted from the data. The same dependences are extracted for the unnatural-parity-exchange ratio |U11/T00.
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