|
COLLINS EFFECT AND PREDICTIONS OF SSA FOR HERMES AND COMPASS A. V. Efremov Predictions are made for single-spin azimuthal asymmetries (SSA) due to the Collins effect in pion production from semi-inclusive deep-inelastic scattering off transversely and longitudinally polarized targets for the HERMES and COMPASS experiments. The SSA AUT from the transversely polarized proton target are found to be about 20% for positive and neutral pions both at HERMES and COMPASS. For a longitudinally polarized target for COMPASS AULsinf ~ 1% and AULsin2f ~ 3%. |