On semi-exclusive measurement of $γγ\toγγ$ scattering

The two-photon production of photon pairs, i.e. the $γγ\toγγ$ process, is studied. Different production modes regarding the elastic or inelastic coupling of the intermediate-state photons to the protons are considered. The semi-exclusive measurement, where one intact proton is registered by a dedicated forward proton detector, is discussed. As an example, the signal and background simulations are performed for the $γγ\toγγ$ process mediated by the hypothetical 750 GeV resonance.

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