Observing light-by-light scattering at the Large Hadron Collider
High Energy Physics - Phenomenology
2016-04-13 v3 High Energy Physics - Experiment
Nuclear Experiment
Nuclear Theory
Abstract
Elastic light-by-light scattering, , is open to study at the Large Hadron Collider thanks to the large quasi-real photon fluxes available in electromagnetic interactions of protons (p) and lead (Pb) ions. The cross sections for diphoton masses GeV amount to 105 fb, 260 pb, and 370 nb in p-p, p-Pb, and Pb-Pb collisions at nucleon-nucleon center-of-mass energies = 14 TeV, 8.8 TeV, and 5.5 TeV respectively. Such a measurement has no substantial backgrounds in Pb-Pb collisions where one expects about 70 signal events per run, after typical detector acceptance and reconstruction efficiency selections.
Cite
@article{arxiv.1305.7142,
title = {Observing light-by-light scattering at the Large Hadron Collider},
author = {David d'Enterria and Gustavo G. da Silveira},
journal= {arXiv preprint arXiv:1305.7142},
year = {2016}
}
Comments
6 pages, 3 figures. Corrected (increased) cross sections and yields. Conclusions unchanged. PRL Erratum to appear