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Heavy ion collisions

A clash of photons

The ATLAS Collaboration observed photons elastically scattering from other photons — an effect predicted by quantum electrodynamics over 80 years ago.

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Figure 1: Light-by-light scattering in the ATLAS detector.


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Correspondence to Spencer R. Klein.

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Klein, S. A clash of photons. Nature Phys 13, 827–828 (2017).

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