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High Energy Physics - Phenomenology

arXiv:1602.08088 (hep-ph)
[Submitted on 25 Feb 2016]

Title:Measuring light-by-light scattering at the LHC and FCC

Authors:David d'Enterria, Gustavo G. da Silveira
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Abstract:Elastic light-by-light scattering, $\gamma\gamma\to\gamma\gamma$, can be measured in electromagnetic interactions of lead (Pb) ions at the Large Hadron Collider (LHC) and Future Circular Collider (FCC), using the large (quasi)real photon fluxes available in ultraperipheral collisions. The $\gamma\gamma\to\gamma\gamma$ cross sections for diphoton masses m$_{\gamma\gamma}>$ 5 GeV in pp, pPb, and PbPb collisions at LHC ($\sqrt{\rm s_{_{NN}}}$ = 5.5, 8.8, 14 TeV) and FCC ($\sqrt{\rm s_{_{NN}}}$ = 39, 63, 100 TeV) center-of-mass energies are presented. The measurement has controllable backgrounds in PbPb collisions, and one expects about 70 and 2500 signal events per year at the LHC and FCC respectively, after typical detector acceptance and reconstruction efficiency selections.
Comments: 7 pages, 3 figures. Proceedings EDS'15 Blois conference, July 2015, Corse
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
Cite as: arXiv:1602.08088 [hep-ph]
  (or arXiv:1602.08088v1 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.1602.08088

Submission history

From: David d'Enterria [view email]
[v1] Thu, 25 Feb 2016 20:54:09 UTC (41 KB)
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