On double polarization asymmetries in the elastic electron-proton scattering

Abstract

Double polarization asymmetry D p (M) for the process of elastic electroweak scattering of the longitudinally polarized electrons by polarized proton target is considered with account of anapole G 1p and electric dipole moment (EDM) G 2p proton form factors. This asymmetry is only due to T-parity violating form factor G 2p , but does not directly depend on it, and having a significant value, allows to confirm the existence of the EDM of the proton.