ZhETF, Vol. 142,
p. 242 (August 2012)
(English translation - JETP,
Vol. 115, No. 2,
available online at www.springer.com
RADIATIVE CORRECTIONS TO POLARIZATION OBSERVABLES IN ELASTIC ELECTRON-DEUTERON SCATTERING IN LEPTONIC VARIABLES
Gakh G.I., Konchatnij M.I., Merenkov N.P.
Received: January 17, 2012
The model-independent QED radiative corrections to polarization observables in elastic scattering of unpolarized and longitudinally polarized electron beams by a deuteron target are calculated in leptonic variables. The experimental setup when the deuteron target is arbitrarily polarized is considered and the procedure for applying the derived results to the vector or tensor polarization of the recoil deuteron is discussed. The calculation is based on taking all essential Feynman diagrams into account, which results in the form of the Drell-Yan representation for the cross section, and the use of the covariant parameterization of the deuteron polarization state. Numerical estimates of the radiative corrections are given in the case where event selection allows undetected particles (photons and electron-positron pairs) and the restriction on the lost invariant mass is used.