One loop multiphoton helicity amplitudes
- Fermi National Laboratory, P.O. Box 500, Batavia, Illinois 60510 (United States)
We use the solutions to the recursion relations for double-off-shell fermion currents to compute helicity amplitudes for {ital n}-photon scattering and electron-positron annihilation to photons in the massless limit of QED. The form of these solutions is simple enough to allow {ital all} of the integrations to be performed explicitly. For {ital n}-photon scattering, we find that unless {ital n}=4 the amplitudes for the helicity configurations (+++...+) and ({minus}++...+) vanish to one-loop order.
- OSTI ID:
- 142700
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 5 Vol. 49; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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