The six-photon amplitude

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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.
4 pages, 5 figures, talk given at 43nd Rencontres de Moriond on QCD and High-Energy Interactions, La Thuile, March 2007

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High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/158340

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0804.1315
 http://arxiv.org/abs/0804.1315

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arXiv