Radiative Corrections to the Azimuthal Asymmetry in Transversely Polarized Moller Scattering.

Dixon, L. ; Schreiber, M.

Technical Information Center Oak Ridge Tennessee

关键词: Moeller scattering;    Asymmetry;    Electrons;    Radiations;    Radiative corrections;   

RP-ID  :  DE2004826750

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Experiment E158 at SLAC can measure an azimuthal asymmetry in single-spin, transversely polarized Moeller scattering, e(sup -)(up-arrow)e(sup -) (yields) e(sup -)e(sup -), which arises from a QED rescattering phase. We recompute the leading-order (one-loop) asymmetry, con.rming previous results, and calculate the leading logarithmic QED corrections due to initial-state radiation from the beam and target electrons, and due to final-state radiation. The size of these radiative corrections is quite sensitive to experimental details, such as the acceptance in energy and in polar angle of the scattered electron. For E158, the corrections are modest, increasing the parts-per-million asymmetry by roughly 1%.