Polarized e-p elastic scattering in the collider frame

Abstract

Double polarization elastic e[superscript -->]-p[superscript -->] cross sections and asymmetries are considered in collider kinematics. Covariant expressions are derived for the general situation involving crossed beams; these are checked against the well-known results obtained when the proton is at rest. Results are given using modern models for the proton electromagnetic form factors for kinematics of interest in e-p colliders such as the Electron-Ion Collider facility which is in its planning stage. In context, parity-violating elastic e[superscript -->]-p scattering is compared and contrasted with these double-polarization (parity-conserving) results.