The six-photon amplitude
classification
✦ hep-ph
keywords
six-photonabsenceamplitudediagramsdoubleenoughexternalgood
read the original abstract
Thanks to the absence of tree order, the six-photon processes is a good laboratory to study multi-leg one-loop diagrams. Particularly, there are enough on-shell external legs to observe a special Landau singularity: the double parton scattering.
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