Single--Spin Asymmetries in the Bethe--Heitler Process $e^{-}+p\to e^{-}+\gamma +p$ from QED Radiative Corrections

Abstract

We derived analytic formulae for the polarization single--spin asymmetries (SSA) in the Bethe--Heitler process $e^{-}+p\to e^{-}+\gamma +p$. The asymmetries arise due to one-loop QED radiative corrections to the leptonic part of the interaction and present a systematic correction for the studies of virtual Compton Scattering on a proton through interference with the Bethe-Heitler amplitude. Considered are SSA with either longitudinally polarized electron beam or a polarized proton target. The computed effect appears to be small, not exceeding 0.1 per cent for kinematics of current virtual Compton scattering experiments.

arXiv comment8 pages, 9 figures

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Cited by in corpus (14)

• Measurement of Deeply Virtual Compton Scattering with a Polarized Proton Target
• The Beam--Charge Azimuthal Asymmetry and Deeply Virtual Compton Scattering
• The E00-110 experiment in Jefferson Lab's Hall A: Deeply Virtual Compton Scattering off the Proton at 6 GeV
• Measurement of Azimuthal Asymmetries With Respect To Both Beam Charge and Transverse Target Polarization in Exclusive Electroproduction of Real Photons
• Measurement of double-spin asymmetries associated with deeply virtual Compton scattering on a transversely polarized hydrogen target
• Exclusive Leptoproduction of Real Photons on a Longitudinally Polarised Hydrogen Target
• Single and double spin asymmetries for deeply virtual Compton scattering measured with CLAS and a longitudinally polarized proton target
• Separation of contributions from deeply virtual Compton scattering and its interference with the Bethe--Heitler process in measurements on a hydrogen target
• Longitudinal target-spin asymmetries for deeply virtual Compton scattering
• Measurement of azimuthal asymmetries associated with deeply virtual Compton scattering on an unpolarized deuterium target
• Nuclear-mass dependence of azimuthal beam-helicity and beam-charge asymmetries in deeply virtual Compton scattering
• Measurement of azimuthal asymmetries associated with deeply virtual Compton scattering on a longitudinally polarized deuterium target
• Beam-helicity asymmetry in photon and pion electroproduction in the Delta(1232) resonance region at Q^2= 0.35 (GeV/c)^2
• Radiative corrections to DVCS electron tensor