Including virtual photons in strong interactions

Details Including virtual photons in strong interactions Including virtual photons in strong interactions

2002-09-17

arxiv.org/abs/hep-ph/0209182v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk presented at the International conference on Quarks and Nuclear Physics, June 9-14, 2002, Juelich, Germany

Scientific paper

10.1140/epja/i2002-10267-5

In the perturbative field-theoretical models we investigate the inclusion of the electromagnetic interactions into the purely strong theory that describes hadronic processes. In particular, we study the convention for splitting electromagnetic and strong interactions and the ambiguity of such a splitting. The issue of the interpretation of the parameters of the low-energy effective field theory in the presence of electromagnetic interactions is addressed, as well as the scale and gauge dependence of the effective theory couplings. We hope, that the results of these studies are relevant for the electromagnetic sector of ChPT.

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