ZhETF, Vol. 129,
p. 254 (February 2006)
(English translation - JETP,
Vol. 102, No. 2,
available online at www.springer.com
SINGLE-SPIN ASYMMETRIES IN THE BETHE - HEITLER PROCESS e-+p\rightarrow e-+\gamma+p INDUCED BY LOOP CORRECTIONS
Afanasev A.V., Konchatnij M.I., Merenkov N.P.
Received: July 28, 2005
PACS: 12.20.-m, 13.40.-f, 13.60.-r, 13.60.Hb, 13.88.+e
The single-spin beam and target asymmetries in the hard electroproduction process induced by the loop radiative corrections to the vertex part of lepton interaction are considered. The physical reason for the appearance of such a kind of asymmetries is a nonzero imaginary part of the amplitude (on the level of radiative corrections) caused by diagrams with a photon radiation by the outgoing electron. We calculate the single-spin beam and target asymmetries at a longitudinally polarized electron beam or at arbitrary polarizations of the target proton for the CLAS and HERMES experimental conditions.