2023/01/17 by K. Beloborodov, Beloborodov, K. I., T. Kharlamova +3
Physics and Astronomy · #Accelerator Physics (physics.acc-ph) #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2301.07089
openalex publication_date 2023/01/17 · openalex created_date 2023/01/20 · openalex updated_date 2026/07/28
The process of elastic scattering of photons (scattering of light by light) has attracted much attention in recent years. It goes through a loop where all the charged particles contribute to the cross section. To date, this γγ→ γγ process has been experimentally studied in the Delbrück scattering and splitting of photons in the Coulomb field of the nucleus, as well as at the LHC in the scattering of virtual photons in ion-ion collisions. Hopes for further study of this process are associated with high-luminosity e+e- colliders (SuperKEKb, FCC, CEPC, ILC, CLIC) and gamma-gamma colliders based on the Compton scattering of laser photons on electrons. In this article, we show that there are some very serious background processes where the annihilation of electrons and positrons (real and virtual) produces a pair of photons flying into the detector, and the the remaining products fly away from the detector at small angles.