https://doi.org/10.1140/epjc/s10052-021-08898-z
Regular Article – Theoretical Physics
Diphoton decay of the higgs from the Epstein–Glaser viewpoint
1
Institut für Theoretische Physik, Universität Leipzig, 04103, Leipzig, Germany
2
Max-Planck Institute for Mathematics in the Sciences, 04103, Leipzig, Germany
3
Institut für Theoretische Physik, Universität Göttingen, 37077, Göttingen, Germany
4
CAPA and Departamento de Física Teórica, Universidad de Zaragoza, 50009, Zaragoza, Spain
5
Laboratorio de Física Teórica y Computacional, Universidad de Costa Rica, 11501, San Pedro, Costa Rica
Received:
9
August
2020
Accepted:
21
January
2021
Published online:
6
February
2021
We revisit a nearly 10-year old controversy on the diphoton decay of the Higgs particle. To a large extent, the controversy turned around the respective merits of the regularization techniques employed. The novel aspect of our approach is that no regularization techniques are brought to bear: we work within the Bogoliubov–Epstein–Glaser scheme of renormalization by extension of distributions. Solving the problem actually required an expansion of this method’s toolkit, furnished in the paper.
Die Eule der Minerva beginnt erst mit der einbrechenden Dämmerung ihren Flug
– Georg Wilhelm Friedrich Hegel.
To the memory of Günter Scharf and Raymond Stora.
© The Author(s) 2021
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