Photon-photon scattering

The existence of photon-photon scattering historically was one of the first non-trivial predictions of QED. However, since the cross section is very small at low energies it was only in 2017 that a direct measurement was achieved in heavy-ion collisions at the LHC. After short reviews of the history...

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Bibliographic Details
Main Author: Schubert, Christian
Format: Conference Proceeding
Language:English
Subjects:
Apexes
Born-Infeld theory
Bosons
Heavy ions
Ionic collisions
Photon scatter
Photons
Quantum electrodynamics
Scattering cross sections
Tensors
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Summary:The existence of photon-photon scattering historically was one of the first non-trivial predictions of QED. However, since the cross section is very small at low energies it was only in 2017 that a direct measurement was achieved in heavy-ion collisions at the LHC. After short reviews of the history of the subject and of the CERN experiment, I discuss the general structure of the four-photon tensor, which also serves as the prototype for all vertices of four gauge bosons. I then come to generalizations from QED to the Standard Model and beyond, in particular to the Born-Infeld theory that has gained some popularity in recent years as an alternative to standard quantum electrodynamics.
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/202430103003