Two-loop corrections to Light-by-Light scattering in Supersymmetric QED
High Energy Physics - Phenomenology
2009-11-07 v2
Abstract
We use an n-dimensional projection method to calculate helicity amplitudes for photon-photon scattering up to the two-loop level, for massless particles inside the loop. We confirm the recent standard model results found by Bern et al using another calculational method. We further apply the method to N=1 and N=2 supersymmetric QED. As predicted by the supersymmetric Ward identity, two of the independent amplitudes vanish. The remaining amplitude simplifies as the number of supersymmetries increases. For N=2 SUSY QED, only contributions of weight 4 remain.
Keywords
Cite
@article{arxiv.hep-ph/0202266,
title = {Two-loop corrections to Light-by-Light scattering in Supersymmetric QED},
author = {T. Binoth and E. W. N. Glover and P. Marquard and J. J. van der Bij},
journal= {arXiv preprint arXiv:hep-ph/0202266},
year = {2009}
}
Comments
27 pages, LaTeX with JHEP3.cls, 32 embedded postscript figures, small textual changes