paper

Light-by-Light Scattering and Spacetime Noncommutativity

arXiv:2002.01829 · doi:10.1103/PhysRevD.101.095035

Abstract

The aim of this article is to explore a potential usability of a photon-photon self-interaction from the noncommutative quantum electrodynamics (NCQED) in the case of light-by-light scattering () in ultraperipheral Pb+Pb collisions, a reaction measured recently by ATLAS and planned for future experiments in hadron-hadron colliders. We compute the total cross section from both, the full one-loop standard model (SM) and the tree-level NCQED amplitudes, in the equivalent photon approximation with impact parameters, for various noncommutative scales, , and incoming nuclear spin-energy combinations. We find that NCQED contribution to the cross section has considerable increase at diphoton invariant mass range higher than , while the SM contribution is strongly suppressed in such region. Our results show that the current ATLAS TeV experiment can only probe GeV region. On the other hand, future hadron-hadron collider proposals could have the potential to extend to GeV region, making the performance of scattering on testing space-time noncommutativity close to that of the previously proposed photon-photon mode of linear electron-positron collider.

8 pages, 3 figures, version to be published in PRD

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