Single-spin azimuthal asymmetry in exclusive electroproduction of φ and ω vector mesons on transversely polarized protons

摘要

The hard exclusive electro-production of φ and ω vector mesons was studied with the HERMES spectrometer at the DESY laboratory by scattering 27.6 GeV positron and electron beams off a transversely polarized hydrogen target. The single-spin azimuthal asymmetry with respect to the transverse proton polarization was measured.