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

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

2005-07-05

arxiv.org/abs/hep-ph/0507059v1

J.Exp.Theor.Phys.102:220-233,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 9 figures

Scientific paper

10.1134/S1063776106020038

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.

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