One loop multiphoton helicity amplitudes.
نویسنده
چکیده
We use the solutions to the recursion relations for double-off-shell fermion currents to compute helicity amplitudes for n-photon scattering and electronpositron annihilation to photons in the massless limit of QED. The form of these solutions is simple enough to allow all of the integrations to be performed explicitly. For n-photon scattering, we find that unless n = 4, the amplitudes for the helicity configurations (+++ · · ·+) and (−++ · · ·+) vanish to oneloop order. 11.80.Cr, 12.20.Ds Typeset using REVTEX 1
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عنوان ژورنال:
- Physical review. D, Particles and fields
دوره 49 5 شماره
صفحات -
تاریخ انتشار 1994