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arXiv · hep-th/0509063

MHV Techniques for QED Processes

K. J. Ozeren·W. J. Stirling
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Abstract

Significant progress has been made in the past year in developing new `MHV' techniques for calculating multiparticle scattering amplitudes in Yang-Mills gauge theories. Most of the work so far has focussed on applications to Quantum Chromodynamics, both at tree and one-loop level. We show how such techniques can also be applied to abelian theories such as QED, by studying the simplest tree-level multiparticle process, e^+e^- to n γ. We compare explicit results for up to n=5 photons using both the Cachazo, Svrcek and Witten `MHV rules' and the related Britto-Cachazo-Feng `recursion relation' approaches with those using traditional spinor techniques.

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K. J. Ozeren, W. J. Stirling. 2005-11-28. MHV Techniques for QED Processes. https://doi.org/10.1088/1126-6708%2F2005%2F11%2F016

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