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hep-ph2020★ 4 cited
Diphoton decay of the higgs from the Epstein--Glaser viewpoint
Pawel Duch, Michael Duetsch, Jose M. Gracia-Bondia
We revisit a nearly ten-year old controversy on the diphoton decay of the Higgs particle. To a large extent, the controversy turned around the respective merits of the regularizati…
hep-ph1994★ 19 cited
Gauge invariance of massless QED
Michael Duetsch, Tobias Hurth, Guenter Scharf
A simple general proof of gauge invariance in QED is given in the framework of causal perturbation theory. It illustrates a method which can also be used in non-abelian gauge theor…