Observing light-by-light scattering at the Large Hadron Collider.

@article{dEnterria2013ObservingLS,
  title={Observing light-by-light scattering at the Large Hadron Collider.},
  author={David d’Enterria and G. G. Da Silveira},
  journal={Physical review letters},
  year={2013},
  volume={111 8},
  pages={
          080405
        }
}
Elastic light-by-light scattering (γγ→γγ) is open to study at the Large Hadron Collider thanks to the large quasireal photon fluxes available in electromagnetic interactions of protons (p) and lead (Pb) ions. The γγ→γγ cross sections for diphoton masses m(γγ)>5 GeV amount to 12 fb, 26 pb, and 35 nb in p-p, p-Pb, and Pb-Pb collisions at nucleon-nucleon center-of-mass energies √(s(NN))=14, 8.8, and 5.5 TeV, respectively. Such a measurement has no substantial background in Pb-Pb collisions where… Expand
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