Observing light-by-light scattering at the large hadron collider
(2013) Physical Review Letters — Vol. 111, n° 8 (2013)
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- Abstract
- 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<inf>γγ</inf>>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<inf>NN</inf>=14, 8.8, and 5.5 TeV, respectively. Such a measurement has no substantial background in Pb-Pb collisions where one expects about 20 signal events per run, after typical detector acceptance and reconstruction efficiency selections. © 2013 American Physical Society.
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Citations
D’Enterria, D., & Da Silveira, G. G. (2013). Observing light-by-light scattering at the large hadron collider. Physical Review Letters, 111(8). https://doi.org/10.1103/PhysRevLett.111.080405 (Original work published 2013)