Polarized Electron-Electron Scattering at GeV Energies

P. S. Cooper; M. J. Alguard; R. D. Ehrlich; V. W. Hughes; H. Kobayakawa; J. S. Ladish; M. S. Lubell; N. Sasao; K. P. Schüler; P. A. Souder; G. Baum; W. Raith; K. Kondo; D. H. Coward; R. H. Miller; C. Y. Prescott; D. J. Sherden; C. K. Sinclair

doi:10.1103/PhysRevLett.34.1589

Polarized Electron-Electron Scattering at GeV Energies

P. S. Cooper, M. J. Alguard, R. D. Ehrlich, V. W. Hughes, H. Kobayakawa, J. S. Ladish, M. S. Lubell, N. Sasao, K. P. Schüler, P. A. Souder, G. Baum, W. Raith, K. Kondo, D. H. Coward, R. H. Miller, C. Y. Prescott, D. J. Sherden, and C. K. Sinclair

Phys. Rev. Lett. 34, 1589 – Published 23 June 1975

Abstract

The longitudinal polarization of the new Yale University-Stanford Linear Accelerator Center polarized-electron beam has been determined at laboratory energies between 6.47 and 19.40 GeV. Spin-dependent elastic electron-electron scattering (Møller scattering) has been found to be a practical technique for polarization measurements at high energies. The results are consistent with the energy and angular dependence predicted by quantum electrodynamics and with an energy-independent beam polarization of 0.76±0.03.