| Issue |
J. Phys. Colloques
Volume 35, Number C2, Mars 1974
Colloque international sur les collisions photon-photon dans les anneaux de stockage électron-positron / International colloquium on photon-photon collisions in electron-positron storage rings
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| Page(s) | C2-124 - C2-124 | |
| DOI | https://doi.org/10.1051/jphyscol:1974235 | |
Colloque international sur les collisions photon-photon dans les anneaux de stockage électron-positron / International colloquium on photon-photon collisions in electron-positron storage rings
J. Phys. Colloques 35 (1974) C2-124-C2-124
DOI: 10.1051/jphyscol:1974235
University of Lancaster, Department of Physics, Lancaster, UK
J. Phys. Colloques 35 (1974) C2-124-C2-124
DOI: 10.1051/jphyscol:1974235
The equivalent polarised-photon approximation
C. J. BROWN and D. H. LYTHUniversity of Lancaster, Department of Physics, Lancaster, UK
Abstract
The equivalent photon approximation is studied for the case where the scattered electron is detected. The equivalent photon is then polarised. The region of validity is found to depend on the virtual photon scattering angle, rather than on the electron scattering angle, and this distinction is important. A discrepancy concerning the dependence on beam energy of the total cross section for ee- → ee- + hadrons which was noted by Bonneau et al. is resolved.